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.

['4867', 'Y', 't', '8365', 'f', '9409', 'H', '1913', 'J', 'F', 'w']
4867, 25, 20, 8365, 6, 9409, 8, 1913, 10, 6, 23

['297', '6515', '5045', '9295', 'z', 'd', '4183', 'a', 'I', '9595', '957', '5687', 'r', 't', 'N', '8997', '8289', '4897', 'u', '4199', '2449', '5275']
297, 6515, 5045, 9295, 26, 4, 4183, 1, 9, 9595, 957, 5687, 18, 20, 14, 8997, 8289, 4897, 21, 4199, 2449, 5275

['749', 'Y', 'U', '1801', 'k', 'j', 'a', 'U', '1545', 'i', '229', 'D', 'R']

749, 25, 21, 1801, 11, 10, 1, 21, 1545, 9, 229, 4, 18