1: (1 7 20)

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

2: (0 19 5)

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

3: (1 7 20)

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

4: (4 9 6)

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