1: (3 8 16)

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

2: (7 17 8)

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

3: (1 10 4)

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

4: (6 12 9)

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