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: ['5601', 't', '3953', '7581', 'S', 'C', '4493', '2783', 'h', '2153', 'W', 'R', 'f', 'H', '9833', '3455', '6401', '1821', '7301', '2965', '1963', 'B', 'h', 'd', 'z', '8889']

5601, 20, 3953, 7581, 19, 3, 4493, 2783, 8, 2153, 23, 18, 6, 8, 9833, 3455, 6401, 1821, 7301, 2965, 1963, 2, 8, 4, 26, 8889