In this task, you are given two lists A,B. Find the longest common subsequence in the lists A and B.

['U', 2021, 9935, '873', 'T', '9883', 'y', 8789, 'v'], ['g', 7321, '873', 'T', '9883', 'p', 9721]
873, T, 9883

[4521, 9297, 1549, 'j', 6533, 5069, 2291, 3507, 6815, 1619, 5771, 'k', '1705', '9637', 'd', 'g', '3717', 'Q', 'V', '8195', 'S', 'E', 'a', 'y', 'r', 'k', 'o', 'L', 3267, 'L', 2907, 'l', 4505, 'm', 3519, 'g'], ['T', 'r', '1705', '9637', 'd', 'g', '3717', 'Q', 'V', '8195', 'S', 'E', 'a', 'y', 'A', 873, 's', 1819, 4947, 'E', 'k', 'I', 'M']
1705, 9637, d, g, 3717, Q, V, 8195, S, E, a, y

['y', 1453, 7721, 1625, 'U', 'f', 5755, 'd', 'b', 1239, 'm', 3449, 8479, 7249, 3431, 'T', 1189, 'l', 'm', 'k', 3267, 7257, 5183, 3831, 'o', 'U', '9215', 'o', 'Z', '5389', '279', '5749', '9173', '1549', 't', '1689', '5143', 'C', 'q', '1217', 'B', '8399', 'W', 'a', '8469', '2175', 'x', 'h', '6647', 'A', 'Q', 1137, 'C', 'F', 'm', 4683, 9459, 4099, 'i', 'L', 'j', 5875, 'i', 'v', 1671], [4781, 8375, 7231, 'V', 6663, 9875, 'J', 5155, 'G', 2489, 'L', 987, 2293, 'q', 5135, 6363, 'b', 821, 'i', 6783, 'a', 7469, 'u', 4709, 'o', 'U', '9215', 'o', 'Z', '5389', '279', '5749', '9173', '1549', 't', '1689', '5143', 'C', 'q', '1217', 'B', '8399', 'W', 'a', '8469', '2175', 'x', 'h', '6647', 'A', 'W', 'V', 8035, 'I', 'I', 'b', 6919, 'J', 'Q', 'g', 'I', 't', 6413, 7383]

o, U, 9215, o, Z, 5389, 279, 5749, 9173, 1549, t, 1689, 5143, C, q, 1217, B, 8399, W, a, 8469, 2175, x, h, 6647, A