1: (0 5 15)

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

2: (4 19 7)

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

3: (5 17 8)

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

4: (14 18 16)

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