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.

['7565', 'c', '4849', '6873', '6901', 'Q', '4237']
7565, 3, 4849, 6873, 6901, 17, 4237

['n', '8891', 'A', 'A', '3927', '7777', 't', 'E', 'A', 'T', 'S', '9711', 'z', 'o', '2661', 'i', 'o', '3391', 'C', '331', 'r', '5697', 'G', 'H', '3341', 'k', 'R', 'C', '7805', 'L', 'Q', 'V', 'A', '55', '8015', 'm', 'k']
14, 8891, 1, 1, 3927, 7777, 20, 5, 1, 20, 19, 9711, 26, 15, 2661, 9, 15, 3391, 3, 331, 18, 5697, 7, 8, 3341, 11, 18, 3, 7805, 12, 17, 22, 1, 55, 8015, 13, 11

['6393', 'r', '6639', '5477', '5313', '5767', '977', '1673', 'J', 'M', 'u', 'H', 'p', '2555', 'm', '469', '6965', 'A', 'f', 'v', '7453', 'h', 'c', 'p', 'i', '3971', '841', '4559', 'l', '6859']

6393, 18, 6639, 5477, 5313, 5767, 977, 1673, 10, 13, 21, 8, 16, 2555, 13, 469, 6965, 1, 6, 22, 7453, 8, 3, 16, 9, 3971, 841, 4559, 12, 6859