1: (1 5 12)

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

2: (4 14 6)

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

3: (10 15 13)

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

4: (3 9 12)

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