1: (0 4 15)

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

2: (3 19 5)

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

3: (4 17 8)

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

4: (14 18 16)

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