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1 1(2) 1(3)
1(4) 1(5) 3
3(2) 3(3) 3(4)
3(5) 3(6) 3(7)
3(8) 3(9) 4
4(10) 4(11) 4(12)
4(13) 4(14) 4(15)
4(5) 4(6) 4(7)
4(8) 4(9) 5
5(2) 5(3) 5(4)