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.

['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

['E', 'v', '5719', 'c', '7615', 'Y', '703', 'd', '8835', 'L', '1677', '5307', '8773', 'B', '3519', 'M', 'u', '1129', '7183', 'X', '1801', '4391', 'r', '3347', 'G', '7385', '7839', 'Q', 'j', 'n', '109', 'o', 'P', '3691', 'a', 'v', 'Z', '6541']
5, 22, 5719, 3, 7615, 25, 703, 4, 8835, 12, 1677, 5307, 8773, 2, 3519, 13, 21, 1129, 7183, 24, 1801, 4391, 18, 3347, 7, 7385, 7839, 17, 10, 14, 109, 15, 16, 3691, 1, 22, 26, 6541

['5915', '3409', 'P', '6729', 'W', 'Y', '8945', '723', 'x', '7415', 'B', '3423', '6879', '2345', 'v']

5915, 3409, 16, 6729, 23, 25, 8945, 723, 24, 7415, 2, 3423, 6879, 2345, 22