Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['o', 'n', '8651', '6777', 'g', 'Q', '4317', '1253', '8571', '7369', '7781', '7779', 'y', '6099', '785', 'C', '6759', 'I', 'A', '6421', '1149', '9449', 'M', '1819', '8965', '7731', '1859', '389', 'K', '9667', '6601', 'c', '7359', 'N', 'r', 'l', '2137', '4941', '8487', 'T']

15, 14, 8651, 6777, 7, 17, 4317, 1253, 8571, 7369, 7781, 7779, 25, 6099, 785, 3, 6759, 9, 1, 6421, 1149, 9449, 13, 1819, 8965, 7731, 1859, 389, 11, 9667, 6601, 3, 7359, 14, 18, 12, 2137, 4941, 8487, 20