1: (3 9 11)

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

2: (0 10 8)

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

3: (3 9 11)

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

4: (1 20 4)

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