1: (5 10 20)

(0 19 7)(1 17 4)(2 13 3)(5 10 20)(6 11 8)(9 15 12)(14 18 16)

2: (0 19 7)

(0)(1 17 4)(2 13 3)(5 10 20)(6 11 8)(7)(9 15 12)(14 18 16)(19)

3: (5 10 20)

(0)(1 17 4)(2 13 3)(5)(6 11 8)(7)(9 15 12)(10)(14 18 16)(19)(20)

4: (6 11 8)

(0)(1 17 4)(2 13 3)(5)(6)(7)(8)(9 15 12)(10)(11)(14 18 16)(19)(20)