1: (0 2 12)

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

2: (4 12 20)

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

3: (2 19 7)

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

4: (3 10 5)

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