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.

['9961', 'Y', '669', '8227', 'j', 'c', '8749', 'c', 'K', '8439']
9961, 25, 669, 8227, 10, 3, 8749, 3, 11, 8439

['O', 'B', 'm', 'K', 'F', '6191', 'c', 'T', '369', 'C', 'p', '3091', 'i', '9461', '2105', 'J', '7533', 'A', 'B', '8927', 'z', 'A']
15, 2, 13, 11, 6, 6191, 3, 20, 369, 3, 16, 3091, 9, 9461, 2105, 10, 7533, 1, 2, 8927, 26, 1

['8275', '4483', 'C', 'S', 't', 'h', 'N', '6923', 'V', '5715', '8805', '6887', '6905', 'p', '837', 'U', 'd', '1147', '1865', '6643', 'M', 'N', '8323', '3621']

8275, 4483, 3, 19, 20, 8, 14, 6923, 22, 5715, 8805, 6887, 6905, 16, 837, 21, 4, 1147, 1865, 6643, 13, 14, 8323, 3621