1: (1 10 15)

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

2: (6 16 14)

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

3: (1 10 15)

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

4: (5 11 7)

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