1: (6 11 15)

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

2: (4 12 7)

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

3: (11 20 13)

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

4: (3 17 5)

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