Definition: 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.
Input: ['39', 'c', '1835', 'v', 'p', '3841', 'g', '267', 'R', '3005', '1433', '6223', '5473', '9529', 'G', 'E', 'G', '5347', 'Q', 'j', '4655', '8149', '6801', '3801', '1777', '7595', 'b', 'E', 'L']

39, 3, 1835, 22, 16, 3841, 7, 267, 18, 3005, 1433, 6223, 5473, 9529, 7, 5, 7, 5347, 17, 10, 4655, 8149, 6801, 3801, 1777, 7595, 2, 5, 12