1: (0 5 10)

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

2: (4 12 9)

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

3: (10 15 18)

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

4: (14 19 17)

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