Detailed Instructions: 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.
Q: ['433', '4647', 'a', '6541', 'E', 'S', 's', 'N', 'T', '1777', '5997', '2641', 'P', '2705']
A:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
433, 4647, 1, 6541, 5, 19, 19, 14, 20, 1777, 5997, 2641, 16, 2705