1: (0 3 6)

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

2: (5 13 17)

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

3: (11 18 15)

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

4: (6 21 12)

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