A is for Australian Prime Minister Malcolm Turnbull, the ally with whom President Donald Trump denied having a heated telephone call early in his presidency, a falsehood that was completely debunked when the transcripts leaked to the Washington Post six months later.

B is for ban, Muslim, or the president’s repeated efforts to find a way to keep his campaign promise to stop Muslims from entering the country without overtly discriminating based on religion, most recently by including in his ban North Korea, a nation from which virtually no one comes to the United States anyway.

C is for crowd size, or the lie about the number of people who attended President Trump’s inauguration that led Kellyanne Conway to coin the term “alternative facts.”

D is for diversity lottery, a system by which a relatively small number of thoroughly vetted applicants from nations that have historically been underrepresented among American immigrants are given visas to come here, but which President Trump repeatedly claims amounts to a means for other countries to “send” us their criminals and terrorists.

E is for Electoral College, in which President Trump claimed to have won the biggest victory since Ronald Reagan, although his 306 votes were fewer than President Barack Obama or President Bill Clinton got either time and nowhere close to President George H.W. Bush in 1988.

F is for F-35, the fighter plane on which President Trump has claimed dozens of times to have saved American taxpayers more than $700 million with under an hour’s worth of phone calls. It probably didn’t take him long since most of the savings were negotiated before he arrived.

G is for “Germany owes vast sums of money for NATO & the United States must be paid more for the powerful, and very expensive, defense it provides to Germany!” Um, no. Germany is in compliance with current NATO defense spending requirements, and NATO countries don’t pay anyone else, including the United States, for their defense.

H is for “he totally denies it,” or President Trump’s facile and self-serving defense of the loathsome Alabama senate candidate, Roy Moore, a standard he would notably not extend to Democrats accused of sexual misconduct.

I is for “I don’t know and/or have never met,” which was the president’s demonstrably false claim in a tweet this month about the women who have accused him of sexual misconduct of the sort he was caught on tape bragging about.

J is for “job growth the likes of which our country has not seen in a very long time,” which President Trump bragged about in a speech to the United Nations in September, which is only true if you consider it to have been a very long time since he took office, as job growth was in fact stronger under President Barack Obama than it was in the first nine months of Mr. Trump’s term. In fairness, it does feel like a “very long time” since the inauguration.

K is for Khan, Sadiq, the London mayor whom President Trump completely unfairly maligned in a tweet after a terror attack. “At least 7 dead and 48 wounded in terror attack and Mayor of London says there is ‘no reason to be alarmed!’ Mr. Trump wrote. “We must stop being politically correct and get down to the business of security for our people. If we don't get smart it will only get worse.” What Mr. Khan actually said is that Londoners should not be alarmed by the increased police presence on the streets.

L is for La David Johnson, an Army sergeant who was killed in Niger. President Trump called his wife after falsely claiming that previous presidents had not called the families of fallen soldiers and then claimed not to have said what two witnesses said he did.

M is for “many fine people on both sides,” which was President Trump’s considered evaluation of the relative merits of the neo-Nazi, skinhead, alt-right and white supremacist groups who gathered to protest the removal of Confederate statues in Charlottesville and the demonstrators who showed up to oppose them.

N is for “not good for me,” President Trump’s estimation of the likely effect of the Republican tax overhaul on his own pocketbook, which is only true if you believe he does not want to save millions a year based on preferential treatment of pass-through income. What we do know about his past tax returns suggests that if Mr. Trump loves paying taxes, it’s a new phenomenon.

O is for obstruction of justice, or what President Trump insists his suggestion that then-FBI Director James Comey drop his investigation into Michael Flynn’s Russian connections, and his subsequent firing of Mr. Comey, does not entail.

P is for pre-existing conditions, which President Trump promised would still be covered under his repeal-and-replace plan for the Affordable Care Act, although the legislation included no mechanisms to make that economically feasible.

Q is for Quantico, Va., the site of the FBI National Academy graduation ceremony at which the president claimed that the nation was angered by the “disgraceful” behavior of the bureau.

R is for “real catastrophe like Katrina,” or President Trump’s assessment of what Hurricane Maria’s impact on Puerto Rico was not. This despite the widespread economic devastation, lack of power, food and water, and a death toll that appears to be scores of times higher that original official estimates.

S is for “stronger and more powerful than ever before,” which was how President Trump described the U.S. nuclear arsenal in a tweet amid one of his periodic insult-exchanges with Kim Jong Un, supposedly as a result of his “first order as president” to “renovate and modernize our nuclear arsenal.” What he had actually done was to order a Nuclear Posture Review, the same exercise every recent president has conducted.

T is Trump Tower, the site where President Trump claimed President Barack Obama had wiretapped him prior to the election, a claim backed by no evidence whatsoever.

U is for U.S.S. Carl Vinson, the aircraft carrier the Trump administration claimed was steaming for the Korean peninsula in a sign of strength in the ongoing war of words with North Korea. Except it was actually heading in the opposite direction, toward Australia, for an unrelated and pre-planned military exercise.

V is for illegal votes, of which President Trump claimed with no evidence whatsoever there had been 3 million to 5 million of in the 2018 election, 100 percent of which he evidently believes went to Hillary Clinton, causing him to lose the popular vote.

W is for “what’s happening last night in Sweden,” President Trump’s completely fabricated contention that a terror attack had occurred in the Scandinavian country, which left Swedes completely perplexed.

X is for Xi Jinping, the Chinese leader President Trump showered with sycophancy during his recent trip to Asia, saying he could not blame China for its trade surplus with the U.S., after having done so incessantly on the campaign trail, and who he said he was confident would contain North Korea, despite the president’s previous repeated assertions that the Chinese leader was failing to do so.

Y is for Yemen, the site of a failed military raid early in the Trump administration that the president falsely claimed was President Obama’s idea.

Z is for zero, or the combined number of civil and criminal trials Trump judicial nominee Matthew Petersen had tried in federal or state courts, plus the number of motions he had argued, before being nominated for a lifetime appointment to the D.C. circuit, a position for which the Trump administration insisted he was eminently qualified.