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.

['9003', 'i', '881', 'l', 'f', '2663', '1619', 'Y', 'E', 'W', '2869', 'k', 'v', 'c', '9423', 'S', 'G', 'C', 's', '4311', '531', '9789', '937', 'F']
9003, 9, 881, 12, 6, 2663, 1619, 25, 5, 23, 2869, 11, 22, 3, 9423, 19, 7, 3, 19, 4311, 531, 9789, 937, 6

['7061', '5857', 'V', 'k', 'N', '4711', 's', '6883', '1971', '2181', '7797', '8327', 'l', '5015', 'y', 'P', 'G', '2781', '1835', '745', 'd', 'c', '595', '7335', '6619', '6215', 'b', '1151', 'z', '6817', '4439']
7061, 5857, 22, 11, 14, 4711, 19, 6883, 1971, 2181, 7797, 8327, 12, 5015, 25, 16, 7, 2781, 1835, 745, 4, 3, 595, 7335, 6619, 6215, 2, 1151, 26, 6817, 4439

['8981', '335', '2631', '7493', '6601', '8267', '2741', '817', '7893', '9343', 'K', 'i', '8775', 'x', '5711', '1331']

8981, 335, 2631, 7493, 6601, 8267, 2741, 817, 7893, 9343, 11, 9, 8775, 24, 5711, 1331