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', '7017', 'w', 'Z', 'T', 'X', '8699', 'S', 'R']

SOLUTION: 21, 7017, 23, 26, 20, 24, 8699, 19, 18

PROBLEM: ['q', 'Y', 'l', 'M', 'L', 'p', 'z', 'h', 'Z', 'O', '7403', '9151', '653', '7039', '3831', 'g', '7635', '267', 'O', 'f', '9917', '3813', 'V', '5529', 'F', '1633', 'i', '1261', '8833', '7069', '6169', 'R', 'F', '4027', '3477']

SOLUTION: 17, 25, 12, 13, 12, 16, 26, 8, 26, 15, 7403, 9151, 653, 7039, 3831, 7, 7635, 267, 15, 6, 9917, 3813, 22, 5529, 6, 1633, 9, 1261, 8833, 7069, 6169, 18, 6, 4027, 3477

PROBLEM: ['L', 'n', '7153', 'r', '7337', '2423', 'D', 'd', 'q', 'q', '2383', 'b', 'f', '1163', 'T', '9955', 'z', 'P', 'K', '9253', 'd', 'i', 'I', 'W', 'p', '9549', '6495', 'P', '843']

SOLUTION:
12, 14, 7153, 18, 7337, 2423, 4, 4, 17, 17, 2383, 2, 6, 1163, 20, 9955, 26, 16, 11, 9253, 4, 9, 9, 23, 16, 9549, 6495, 16, 843