1: (0 12 15)

(0)(1 20 10)(2 18 14)(3 19 5)(4 8 6)(7 12 16 15 11)(9 17 13)

2: (9 17 13)

(0)(1 20 10)(2 18 14)(3 19 5)(4 8 6)(7 12 16 15 11)(9)(13)(17)

3: (7 12 11)

(0)(1 20 10)(2 18 14)(3 19 5)(4 8 6)(7)(9)(11 16 15)(12)(13)(17)

4: (2 18 14)

(0)(1 20 10)(2)(3 19 5)(4 8 6)(7)(9)(11 16 15)(12)(13)(14)(17)(18)