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

['9855', 'K', 'l', '9887', '3421', 'T', 'G', '1611', 'o', '55', 'F', '1667', 'R', '7525', '6091', 'I']
9855, 11, 12, 9887, 3421, 20, 7, 1611, 15, 55, 6, 1667, 18, 7525, 6091, 9

['k', 'V', 'R', 'A', 'X', 'H', 'Z', 'R', 'C', '3981', '2601', 'K', 'n', 'a', 'W', 'f', '931', 'X', '4205', '395', '5693', '3003', '1533', '6009', 'w', 'p']

11, 22, 18, 1, 24, 8, 26, 18, 3, 3981, 2601, 11, 14, 1, 23, 6, 931, 24, 4205, 395, 5693, 3003, 1533, 6009, 23, 16