1: (0 3 9)

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

2: (1 10 8)

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

3: (2 20 5)

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

4: (3 16 17)

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