1: (0 1 5)

(0)(1 20 5 10 3)(2 18 12 9 7)(4 8 6)(11 21 19 15 13)(14 17 16)

2: (5 10 20)

(0)(1 20 3)(2 18 12 9 7)(4 8 6)(5)(10)(11 21 19 15 13)(14 17 16)

3: (2 18 7)

(0)(1 20 3)(2)(4 8 6)(5)(7 12 9)(10)(11 21 19 15 13)(14 17 16)(18)

4: (4 8 6)

(0)(1 20 3)(2)(4)(5)(6)(7 12 9)(8)(10)(11 21 19 15 13)(14 17 16)(18)