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: ['q', '3779', '6411', 'j', 'B', 'X', '1021', '5263', 'A', 'T', 'o', '511', '7789', 'u', 'L', '9117', '5617', '2263', 'd', 'P', '1007', '1835', 'z', '9493', '6381', 'U', 'U', 'F', 'H', '2323', '763', '6063', 'J', 'D', '3369']

17, 3779, 6411, 10, 2, 24, 1021, 5263, 1, 20, 15, 511, 7789, 21, 12, 9117, 5617, 2263, 4, 16, 1007, 1835, 26, 9493, 6381, 21, 21, 6, 8, 2323, 763, 6063, 10, 4, 3369