1: (0 2 15)

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

2: (1 20 4)

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

3: (2 19 9)

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

4: (6 16 14)

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