1: (0 1 2)

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

2: (2 7 20)

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

3: (1 9 5)

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

4: (6 16 8)

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