1: (5 10 15)

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

2: (3 10 8)

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

3: (1 6 4)

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

4: (9 17 11)

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