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.

['E', 'C', 'I', 'G', '5451', 'K', '4777', 'u', '3735', 'q', '3809', '3029', 'N', 'u', 'G', 'v', '1659', 'l', 'B', '5801', 'Y', '8183', 'c', '5927', '9703', '2507', '5907', '6725', 'z', '7047', '6885', 'I', 'F']
5, 3, 9, 7, 5451, 11, 4777, 21, 3735, 17, 3809, 3029, 14, 21, 7, 22, 1659, 12, 2, 5801, 25, 8183, 3, 5927, 9703, 2507, 5907, 6725, 26, 7047, 6885, 9, 6

['F', '9727', 'i', '629', 'w', '5589', 'C', '8363', '3079', '9417', 'r', 'M', '3853', '4105', '6221', 'U', 'u', '4365', 'u', '2303', 'j', '1843', '477', 's', '9767', '8947', '727', '8305', '7679', '8903', '2961', 'O', '281', '6049', '171', 'v', '3995', 'C', '8139', 'P']
6, 9727, 9, 629, 23, 5589, 3, 8363, 3079, 9417, 18, 13, 3853, 4105, 6221, 21, 21, 4365, 21, 2303, 10, 1843, 477, 19, 9767, 8947, 727, 8305, 7679, 8903, 2961, 15, 281, 6049, 171, 22, 3995, 3, 8139, 16

['3379', 'O', '6943', 'j', '9349', 'u', '7405', '167', '8405', 'Y', '3717', '9737', 'u', 'C', '5839', '1251', 'W']

3379, 15, 6943, 10, 9349, 21, 7405, 167, 8405, 25, 3717, 9737, 21, 3, 5839, 1251, 23