1: (4 11 18)

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

2: (3 14 5)

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

3: (10 15 12)

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

4: (7 11 19)

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