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.

['R', '4841', '221', 'p', 'K', '8845', '1765', '7773', 'D', '9859', '8781', 'n', 'J', 's', 'N', '221', '6879', '1257', 'a', 'O', '393', '7189']
18, 4841, 221, 16, 11, 8845, 1765, 7773, 4, 9859, 8781, 14, 10, 19, 14, 221, 6879, 1257, 1, 15, 393, 7189

['L', '9821', 'k', '4663', 'v', 'r', 'N', 'I', 'x', '9133', 'I', 'o', 'n', '6159', 'g', 'U', '5579', 'Y', 't', 'a', 'A']
12, 9821, 11, 4663, 22, 18, 14, 9, 24, 9133, 9, 15, 14, 6159, 7, 21, 5579, 25, 20, 1, 1

['9071', '3435', '1501', 't', '1369', '535', 'u', '1233', 'O']

9071, 3435, 1501, 20, 1369, 535, 21, 1233, 15