1: (0 4 7)

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

2: (4 7 18)

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

3: (2 21 16)

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

4: (15 19 17)

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