In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
['k', 'U', 841, 2179, 'P', 2731, 's', 3727, 'e', 'n', 333, 'u', 6189, 5719, 6993, 5077, 't', 9211, 5473, 533, 'L', 7855, 5393, 'b', 'Y', 'H', 'l', 9063, '1203', 'H', '731', 'J', '1605', '2161', 'f', 'P', 'Q', '5333', 'd', '7313', 'M', 'E', '7553', 'S', 'j', 'i', 'I', 'T', 'u', '9757', 't', '7219', 'x', 'i', 'F', 'q', 'i', '4201', 'A', 'f', 5427, 3285, 7539, 8821, 'W', 'x', 8459, 8671, 4303, 'Q', 8723, 5879, 'I', 8731, 1711, 'K', 9061], [7983, 'T', 'f', 8623, 'v', 'd', 9081, 'm', 'X', 5561, 6383, 7757, 5531, 5199, 75, 7323, 'E', 'B', 8257, 'h', 'm', '1203', 'H', '731', 'J', '1605', '2161', 'f', 'P', 'Q', '5333', 'd', '7313', 'M', 'E', '7553', 'S', 'j', 'i', 'I', 'T', 'u', '9757', 't', '7219', 'x', 'i', 'F', 'q', 'i', '4201', 'T', 4129, 'N', 'n', 'a', 'z', 7017, 'R', 'o', 6873, 'Z', 'c']