1: (0 5 8)

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

2: (1 9 7)

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

3: (4 19 5)

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

4: (2 20 17)

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