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.

['9407', 's', '3757', '6925', '8457', '7659', '2961', '1895', 'x', 'E', '1765', 'G', 'F', '369', 'R', '7845', 'i', 'Z', 'U', '4169', 'V', '6981', '1495', '8703', '9079', '5695', 'Z']
9407, 19, 3757, 6925, 8457, 7659, 2961, 1895, 24, 5, 1765, 7, 6, 369, 18, 7845, 9, 26, 21, 4169, 22, 6981, 1495, 8703, 9079, 5695, 26

['o', '9845', '1599', '7901', '4987', '17', '2053', 'm', 'l', '1923', '9157', '817', '5361', '655', '2393', '8321', 's', '8605', 'l']
15, 9845, 1599, 7901, 4987, 17, 2053, 13, 12, 1923, 9157, 817, 5361, 655, 2393, 8321, 19, 8605, 12

['4709', 'g', '8071', '229', '6335', 'G', 'N', 'M', '8877', 'G', 'C', 'M', 'm', '6165', 'W', '4261', '1665', 'R', '3811', '9357']

4709, 7, 8071, 229, 6335, 7, 14, 13, 8877, 7, 3, 13, 13, 6165, 23, 4261, 1665, 18, 3811, 9357