1: (0 1 15)

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

2: (3 15 20)

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

3: (9 21 19)

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

4: (2 12 4)

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