TASK 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.
PROBLEM: ['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']

SOLUTION: 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

PROBLEM: ['d', '3883', 'I', 'F', '6891', 'G', 'c', '9833', 'F', '3731', 'a', '5267', '5617', '6639', '2861', '7319', '451', 'i', 't', 'k', 'B', '5613', 'T', 'A', 'S', '2435', '5807', '9405', '3453', '1829', 'R', '869', 'X', 'h', '1097', 'B', '3369', 't', 'B']

SOLUTION: 4, 3883, 9, 6, 6891, 7, 3, 9833, 6, 3731, 1, 5267, 5617, 6639, 2861, 7319, 451, 9, 20, 11, 2, 5613, 20, 1, 19, 2435, 5807, 9405, 3453, 1829, 18, 869, 24, 8, 1097, 2, 3369, 20, 2

PROBLEM: ['667', 'b', 'b', 'N', '807', 'P', '1623', '7419', 'M', '8373', 'm', 'a', 'n', '7513']

SOLUTION:
667, 2, 2, 14, 807, 16, 1623, 7419, 13, 8373, 13, 1, 14, 7513