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: ['1051', 'w', '1375', '3821', 'n', 'd', '9069', 'u', 'A', 'C', 'c', 'T', '3663', '3711', '6511', 'i', '245', 'T', '1047', '4195', '3705']

1051, 23, 1375, 3821, 14, 4, 9069, 21, 1, 3, 3, 20, 3663, 3711, 6511, 9, 245, 20, 1047, 4195, 3705