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.
Input: ['t', 'T', '841', 't', 't', 'g', 'U', 'e', '7199', '8661', 't', 'p', 'n', 'f', '1065', '9927', 'w', '4269', 'P', '9583', 'I', 'A', '9183', 'b', 'h', '3553', 'Z', 'j', 'J', '4249', '1719', '4949', '5845', 'm', 'l', '5205', '4227']

20, 20, 841, 20, 20, 7, 21, 5, 7199, 8661, 20, 16, 14, 6, 1065, 9927, 23, 4269, 16, 9583, 9, 1, 9183, 2, 8, 3553, 26, 10, 10, 4249, 1719, 4949, 5845, 13, 12, 5205, 4227