1: (3 9 16)

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

2: (4 20 11)

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

3: (7 13 9)

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

4: (10 15 12)

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