1: (0 5 10)

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

2: (4 19 6)

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

3: (0 5 10)

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

4: (2 20 17)

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