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: ['899', '6077', '7779', '9959', 'B', 'C', 'c', '5977', '9611', 'p', '8013', 'r', '665', 'Z', 'i', '2099', 'w', '4795']

SOLUTION: 899, 6077, 7779, 9959, 2, 3, 3, 5977, 9611, 16, 8013, 18, 665, 26, 9, 2099, 23, 4795

PROBLEM: ['m', 'L', '7455', 'F', '8023', 'Y', '5859']

SOLUTION: 13, 12, 7455, 6, 8023, 25, 5859

PROBLEM: ['8893', '2619', 'P', '7303', '7627', 'T', 'p', 'J', '5751', '2885', '7617', '4111', 'U', 'm', '6055', 'P', 'l', '4333', '6227']

SOLUTION:
8893, 2619, 16, 7303, 7627, 20, 16, 10, 5751, 2885, 7617, 4111, 21, 13, 6055, 16, 12, 4333, 6227