1: (5 10 20)

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

2: (0 19 7)

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

3: (4 8 6)

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

4: (1 5 11)

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