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.

['u', 'i', 'l', 'p', '7463', 'R', '2161', 'N', 'u', '6427', 'V', '8073', '7299', '4171', '9911', '9277', 'Z', '5165', 'H', '7665', 'F', '2113', '3559', 'c', '8931']
21, 9, 12, 16, 7463, 18, 2161, 14, 21, 6427, 22, 8073, 7299, 4171, 9911, 9277, 26, 5165, 8, 7665, 6, 2113, 3559, 3, 8931

['2883', 'o', '7511', '2913', '4201', 'T', '9227', '3371', 'd', 'H', 'i', 'X', '5763', 'P', '7653', 'u', '4855', 'C', 'n', 'g', 'w', 's', '8369', '579', '2193', '1405', 'r', '2443', 'm', '5421']
2883, 15, 7511, 2913, 4201, 20, 9227, 3371, 4, 8, 9, 24, 5763, 16, 7653, 21, 4855, 3, 14, 7, 23, 19, 8369, 579, 2193, 1405, 18, 2443, 13, 5421

['499', '8491', '6423', 'd', '7715', 'Z', '9615', 'I', '4873', '2291', 'l', 'Y', 'l', '2095', '4015', 'V', 'S']

499, 8491, 6423, 4, 7715, 26, 9615, 9, 4873, 2291, 12, 25, 12, 2095, 4015, 22, 19