14 [1,2,4,7,11,16,22,29,37,46,56]
15 [1,3,6,10,15,21,28,36,45,55]
19 [56,55,53,50,46,41,35,28,20,11,1]
20 [55,54,52,49,45,40,34,27,19,10]
23 (["x","x","x","x"],[],[1,2,3,4])
25 [["abc","abc"],[],["","",""]]
26 [[6,7,8,9,10],[1,2,3,4,5,6,7,8,9,10],[]]
28 [([1,2,3,4,5],[6,7,8,9,10]),([1,2,3,4],[])]
30 ([1,2,3,4],[5,6,7,8,9,10])
31 ([],[1,2,3,4,5,6,7,8,9,10])
32 [[10,9,8,7,6,5,4,3,2,1],[]]
44 [1,2,3,4,5,6,7,8,9,10]
45 [[(1,2)],[],[],[(1,2),(2,3),(3,4),(4,5),(5,6)]]
48 [([1,3],[2,4]),([],[])]
49 [([1,3],[2,4],[3,5]),([],[],[])]
54 [[0,1,4],[1,2,3,4],[]]