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.

['2803', '8285', 'U', 'O', '9329', '695', '3877', '1873', '2365', 'P', '153', 'D', '8495', '7593', '4067', 'Y', 'u', '4885', 'f', 'B', 'o', '8499']
2803, 8285, 21, 15, 9329, 695, 3877, 1873, 2365, 16, 153, 4, 8495, 7593, 4067, 25, 21, 4885, 6, 2, 15, 8499

['V', 'z', '1757', 'K', 'z', 'v', '4761', '6505', '1369', 'Z', 'M', '8471', '7', '3963', '5891', 'W', '8417', '4899', '6537', 'W', 'I', 'M', '4479', 'x', '9089']
22, 26, 1757, 11, 26, 22, 4761, 6505, 1369, 26, 13, 8471, 7, 3963, 5891, 23, 8417, 4899, 6537, 23, 9, 13, 4479, 24, 9089

['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