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.

['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

['7199', '1787', '879', '3121', 'Y', '3363', 'O', 'g', 'j', '5767', '8799', '1811', '2255', 'i', 'g', 'D', 'm', 'v', 'm', 'm', '977', '7171', 'j', 'Y', '663', 'v', '5599', '3997', '8287', '7293', 'D']
7199, 1787, 879, 3121, 25, 3363, 15, 7, 10, 5767, 8799, 1811, 2255, 9, 7, 4, 13, 22, 13, 13, 977, 7171, 10, 25, 663, 22, 5599, 3997, 8287, 7293, 4

['P', '261']

16, 261