1: (0 2 15)

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

2: (1 19 5)

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

3: (2 17 6)

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

4: (10 18 16)

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