1: (2 9 19)

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

2: (0 10 8)

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

3: (2 9 19)

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

4: (1 20 4)

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