1: (3 7 11)

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

2: (0 8 6)

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

3: (3 7 11)

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

4: (1 19 4)

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