1: (3 8 16)

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

2: (0 10 7)

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

3: (3 9 20)

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

4: (2 11 4)

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