1: (0 4 6)

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

2: (2 8 4)

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

3: (5 15 7)

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

4: (1 19 3)

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