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: ['3927', 'I', '3053', '299', '4283', '2471', 'V', 't', 'i', 'v', '4623', 'X', 'e', 'S', 'u', 'v', '2201']

SOLUTION: 3927, 9, 3053, 299, 4283, 2471, 22, 20, 9, 22, 4623, 24, 5, 19, 21, 22, 2201

PROBLEM: ['7149', '3915', 'k', 'Y', 'z', 'P', '775', 'v', 'U', '233', 'm', '2939', 'O', '6787', '7717', 'U', '8531', '5071', 'j', '7839', 'S', 'W', 'K', '3689', '8907', '7721', '9099', 'U', 'U', '53', '4025', 'J', '7179', '7587']

SOLUTION: 7149, 3915, 11, 25, 26, 16, 775, 22, 21, 233, 13, 2939, 15, 6787, 7717, 21, 8531, 5071, 10, 7839, 19, 23, 11, 3689, 8907, 7721, 9099, 21, 21, 53, 4025, 10, 7179, 7587

PROBLEM: ['G', 'b', 't', '7513', '2981', 'R', 'I']

SOLUTION:
7, 2, 20, 7513, 2981, 18, 9