1: (4 10 16)

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

2: (3 11 9)

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

3: (10 19 12)

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

4: (14 20 18)

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