In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.
[7347, 1423, 'Y', 3189, 'b', 6539, 8109, 'R', 'd', 'u', 't', 7731, 5193, 1259, 'Y', 'd', 7815, 'E', 2445, 'w', 5195, 'C', 'N', 'U', 'R', '4107', 'd', 'm', '4679', '9661', 'k', 'e', 'V', 'P', '4703', '8945', '6415', '9903', '409', '7777', '2225', '2699', '4595', '4651', 'f', '4051', '2861', 'p', '4069', 'V', 'g', 'q', 'S', 2551, 8509, 'J', 857, 'P', 'Q', 1567, 6319, 'C', 'B', 'A', 9197, 8529, 'G'], ['c', 'W', 'R', 'W', 'h', 5511, 'n', 'Z', 7333, 'r', 6067, 9145, 'k', 'Z', 9075, 'S', 4661, 'A', 3089, 6177, 'B', 'Z', 'l', 2135, '4107', 'd', 'm', '4679', '9661', 'k', 'e', 'V', 'P', '4703', '8945', '6415', '9903', '409', '7777', '2225', '2699', '4595', '4651', 'f', '4051', '2861', 'p', '4069', 'V', 'B', 'd', 'H', 25, 1641, 4823, 1675, 'm', 9765, 757, 'g', 3487, 'g', 1221, 2841, 6949, 'E', 5275, 'g', 'A', 891, 'T', 5293, 'W']