666 51
50
0 1 666 1
0 2 666 2
0 3 666 3
0 4 666 4
0 5 666 5
0 6 666 6
0 7 666 7
0 8 666 8
0 9 666 9
0 10 666 10
0 11 666 11
0 12 666 12
0 13 666 13
0 14 666 14
0 15 666 15
0 16 666 16
0 17 666 17
0 18 666 18
0 19 666 19
0 20 666 20
0 21 666 21
0 22 666 22
0 23 666 23
0 24 666 24
0 25 666 25
0 26 666 26
0 27 666 27
0 28 666 28
0 29 666 29
0 30 666 30
0 31 666 31
0 32 666 32
0 33 666 33
0 34 666 34
0 35 666 35
0 36 666 36
0 37 666 37
0 38 666 38
0 39 666 39
0 40 666 40
0 41 666 41
0 42 666 42
0 43 666 43
0 44 666 44
0 45 666 45
0 46 666 46
0 47 666 47
0 48 666 48
0 49 666 49
0 50 666 50