1: (0 7 10)

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

2: (6 14 8)

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

3: (9 16 11)

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

4: (5 20 10)

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