1: (0 3 6)

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

2: (7 15 19)

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

3: (13 20 16)

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

4: (11 21 19)

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