1: (2 7 20)

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

2: (6 20 8)

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

3: (0 19 4)

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

4: (1 11 5)

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