1: (3 11 13)

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

2: (9 14 12)

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

3: (2 10 5)

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

4: (4 15 13)

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