1: (0 3 6)

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

2: (2 9 4)

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

3: (1 20 6)

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

4: (3 10 7)

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