1: (0 1 2)

(0)(1 19 2 9 3)(4 12 6 20 7)(5 10 8)(11 21 18 16 13)(14 17 15)

2: (2 9 19)

(0)(1 19 3)(2)(4 12 6 20 7)(5 10 8)(9)(11 21 18 16 13)(14 17 15)

3: (6 20 12)

(0)(1 19 3)(2)(4 12 7)(5 10 8)(6)(9)(11 21 18 16 13)(14 17 15)(20)

4: (5 10 8)

(0)(1 19 3)(2)(4 12 7)(5)(6)(8)(9)(10)(11 21 18 16 13)(14 17 15)(20)