1: (0 7 17)

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

2: (1 20 10)

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

3: (6 11 8)

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

4: (3 7 18)

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