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.

['6877', 'l', 'd', 'n', '489', '1817', '2877', '883', '6965', 'L', '2219', 'A', '5233', 'G', 'Z', '219', 'O', 'j', 'T', '607', 'd', '4563', 'M', '7059', '4253', 'G', 'y', '5203', '3319', '5191']
6877, 12, 4, 14, 489, 1817, 2877, 883, 6965, 12, 2219, 1, 5233, 7, 26, 219, 15, 10, 20, 607, 4, 4563, 13, 7059, 4253, 7, 25, 5203, 3319, 5191

['O', '3219', 'G', '1495', '4977', 't', '277', '6411', 'I', 'o', '7879', '3811', '581', '7163', 'Q', '9781', '9539', '2763', 'V', '8255', '6099', '4211', '3687', 'g', '9241']
15, 3219, 7, 1495, 4977, 20, 277, 6411, 9, 15, 7879, 3811, 581, 7163, 17, 9781, 9539, 2763, 22, 8255, 6099, 4211, 3687, 7, 9241

['F', '4543', 'H', '5941', 'h', 't', 'M', 'z', 'd', 'W', 'W', 'V', 't', '8041', 's', '4971', 'H', 'C', '1561', '3989', '4227', '2067', '2283', 'n', 'z', '1489', '6687', '887', '6083', '593', 'H', '9193', 'V']

6, 4543, 8, 5941, 8, 20, 13, 26, 4, 23, 23, 22, 20, 8041, 19, 4971, 8, 3, 1561, 3989, 4227, 2067, 2283, 14, 26, 1489, 6687, 887, 6083, 593, 8, 9193, 22