1: (0 2 15)

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

2: (1 19 3)

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

3: (2 17 4)

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

4: (12 18 16)

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