1: (2 8 15)

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

2: (0 10 5)

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

3: (1 19 3)

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

4: (4 8 16)

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