1: (2 12 20)

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

2: (0 19 7)

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

3: (1 17 4)

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

4: (3 12 6)

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