1: (0 5 7)

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

2: (4 19 6)

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

3: (0 5 7)

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

4: (2 20 18)

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