1: (0 1 3)

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

2: (1 3 8)

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

3: (2 18 5)

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

4: (4 16 6)

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