1: (0 3 6)

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

2: (2 10 5)

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

3: (1 20 6)

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

4: (4 18 7)

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