1: (0 3 7)

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

2: (6 12 19)

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

3: (1 20 17)

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

4: (0 4 2)

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