1: (0 1 3)

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

2: (3 6 20)

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

3: (2 17 5)

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

4: (16 21 19)

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