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.

['3573', '6577', '3359', '8603', 'c', 'p', '5471', 'g', 'D', 'R', 'M', '4907', '3095', '2061', '8137', '5001', 't', 'Q', '6177', 'B', '1553', 'a', '993', 'q', '727', 'l', '141', 'V', 'V', 'C', 'Q', '7919', 'O', 'M', 'o', 'z', 'Z', '5639']
3573, 6577, 3359, 8603, 3, 16, 5471, 7, 4, 18, 13, 4907, 3095, 2061, 8137, 5001, 20, 17, 6177, 2, 1553, 1, 993, 17, 727, 12, 141, 22, 22, 3, 17, 7919, 15, 13, 15, 26, 26, 5639

['Y', 'I', 'B', 'U', 'f', '5835', 'l', 'D', '3619', '5459', 'w', 'N', 'D', '7649', 'L', '8443', 'l', 's', 'm', 'K', 'L', '1997', '8041', '5875', 'L', 'r']
25, 9, 2, 21, 6, 5835, 12, 4, 3619, 5459, 23, 14, 4, 7649, 12, 8443, 12, 19, 13, 11, 12, 1997, 8041, 5875, 12, 18

['p', 'i', '6305', 'I', '7611', 'A', '7757', '903', '8045', '6835', '4159', 'C', '1615', 'V', 'Q', '9489', 'O', 'a', 'b', '7633', 'R', '7519', '4077', '9865', '6395', 'U', '6675', '9893', '3359', '635', '5863', 'W', 'X']

16, 9, 6305, 9, 7611, 1, 7757, 903, 8045, 6835, 4159, 3, 1615, 22, 17, 9489, 15, 1, 2, 7633, 18, 7519, 4077, 9865, 6395, 21, 6675, 9893, 3359, 635, 5863, 23, 24