1: (0 6 12)

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

2: (4 19 8)

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

3: (6 14 17)

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

4: (13 18 16)

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