1: (1 8 15)

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

2: (4 16 14)

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

3: (2 9 7)

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

4: (5 17 15)

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