1: (0 6 11)

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

2: (10 11 12)

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

3: (1 20 7)

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

4: (6 17 11)

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