In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['i', 1901, 7599, 1703, 6041, 3419, 357, 'i', 3547, 3335, 73, 2833, 'Q', 2997, 6097, 3163, 2307, 4661, '7641', '6813', '679', '6803', '1767', 'K', 'D', '3913', 'E', 'U', 'l', '1097', 'I', 'I', '2571', 'b', '7515', '1839', 'G', 'f', '9831', '6561', '6449', '225', 'V', 'L', 605, 's', 6223, 'h', 'l', 3921, 'O', 6543, 'K', 7919, 'J', 'o', 7681, 649, 'b'], [9087, 'y', 'V', 'A', 1425, 8251, '7641', '6813', '679', '6803', '1767', 'K', 'D', '3913', 'E', 'U', 'l', '1097', 'I', 'I', '2571', 'b', '7515', '1839', 'G', 'f', '9831', '6561', '6449', '225', 'V', 'l', 6481, 621, 409, 'E', 3249, 'H', 3487, 5767]