1: (1 11 15)

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

2: (1 5 8)

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

3: (2 9 7)

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

4: (4 12 6)

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