The Letter "K" was the letter he didn't use at all, anyways here's a list of the usage of all the letters in the video: A:49 times B:12 times C:7 times D:13 times E:124 times (as mentioned in the video, it's also the most used letter) F:9 times G:7 times H:20 times I: 36 times J:One singular time K:THE IMPOSTOR RAAAAAAH L:9 times M:3 times N:31 times O:24 times P:3 times Q:One singular time R:28 times S:33 times T:34 times U:17 times V:13 times W:8 times X:3 times Y:6 times Z:2 times Random funfacts: "the" was the most used word with ten usages (as mentioned in the video), then "to" with nine usages and "a" with six usages.