1: (0 3 9)

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

2: (2 20 4)

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

3: (3 17 5)

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

4: (6 18 16)

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