Frequency of English Letters E T A O I N S H R D L C U M W F G Y P B V K J X Q Z 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Frequency (%) 1.9 1.5 8.2 1.0 6.0 6.1 2.4 2.3 12.7 7.0 2.0 7.5 6.3 4.3 4.0 2.8 2.4 2.0 2.8 6.7 9.1 0.2 0.2 0.8 0.1 0.1