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.

['7763', '493', 'Y', '1371']
7763, 493, 25, 1371

['F', '9727', 'i', '629', 'w', '5589', 'C', '8363', '3079', '9417', 'r', 'M', '3853', '4105', '6221', 'U', 'u', '4365', 'u', '2303', 'j', '1843', '477', 's', '9767', '8947', '727', '8305', '7679', '8903', '2961', 'O', '281', '6049', '171', 'v', '3995', 'C', '8139', 'P']
6, 9727, 9, 629, 23, 5589, 3, 8363, 3079, 9417, 18, 13, 3853, 4105, 6221, 21, 21, 4365, 21, 2303, 10, 1843, 477, 19, 9767, 8947, 727, 8305, 7679, 8903, 2961, 15, 281, 6049, 171, 22, 3995, 3, 8139, 16

['5061', '1495', 'a', '8825', '2529', 'n', 'J', 'x', 'm', '7385', '2015', 'p', '8701', 'A', '2135', 'T', '5677', 'q', 'D', 'z', 'P', '5029', '2453', '815', 'G', 'T', 'R', 'i', '503', '8465', '9803', '9109', 'I', 'v', '9501', 'D', '6009', 'T', 'r', 'F']

5061, 1495, 1, 8825, 2529, 14, 10, 24, 13, 7385, 2015, 16, 8701, 1, 2135, 20, 5677, 17, 4, 26, 16, 5029, 2453, 815, 7, 20, 18, 9, 503, 8465, 9803, 9109, 9, 22, 9501, 4, 6009, 20, 18, 6