1
1 0
1 0 3 2
1 0 5 4
1 0 7
1 0 8
1 0
1 0
1 0
1 0
1 0 11 10
1 0 13
1 0 15 14
1 0 17
1 0 19 18
1 0 21
1 0 23
1 0 25 24
1 0
1 0 29
1 0
1 0
1 0
1 0 31 30
1 0 33 32
1 0 35 34
1 0 37 36
1 0 39
1 0 41 40
1 0 43
1 0 51
1 0 53
1 0 55 54
1 0 57 56
1 0 59 58
1 0 61 60
1 0 63
1 0
0
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