1: (1 8 15)

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

2: (4 17 13)

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

3: (5 14 12)

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

4: (3 8 6)

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