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: ['9279', 'R', 'V', 'u', '3993', '5123', 'C', 'r', 'L', '4089', 'X', 'q', '6091', '827', '8465', '2841', 'o', '7089', '6305', '2773', '1069', 'I', 'r', 'P', '6395', '6699', '237', '4779', '3499', 'Y', 'X', 'c', '441', '9271', 'K', '9211', '1839', '2391', 'N', '5771']

9279, 18, 22, 21, 3993, 5123, 3, 18, 12, 4089, 24, 17, 6091, 827, 8465, 2841, 15, 7089, 6305, 2773, 1069, 9, 18, 16, 6395, 6699, 237, 4779, 3499, 25, 24, 3, 441, 9271, 11, 9211, 1839, 2391, 14, 5771