1: (1 3 9)

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

2: (9 12 16)

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

3: (6 13 10)

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

4: (8 17 15)

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