1: (1 5 9)

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

2: (3 11 6)

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

3: (0 4 2)

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

4: (5 20 8)

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