Input: "1*"

there should be 19 ways:

(1) interprets them as two letters from 11 to 19: 9 ways; [AA, AB, AC, AD, AE, AF, AG, AH, AI]

(2) interprets them as one letter from 10 to 19 : 10 ways; [J, K, L, M, N, O, P, Q, R, S]

then the total ways are 10 + 9 = 19 ways