1: (1 5 12)

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

2: (4 19 6)

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

3: (1 5 12)

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

4: (2 20 18)

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