1: (0 1 5)

(0)(1 20 5 8 6)(2 10 3)(4 16 12 9 7)(11 21 19 15 13)(14 18 17)

2: (5 8 20)

(0)(1 20 6)(2 10 3)(4 16 12 9 7)(5)(8)(11 21 19 15 13)(14 18 17)

3: (4 16 7)

(0)(1 20 6)(2 10 3)(4)(5)(7 12 9)(8)(11 21 19 15 13)(14 18 17)(16)

4: (15 21 19)

(0)(1 20 6)(2 10 3)(4)(5)(7 12 9)(8)(11 21 13)(14 18 17)(15)(16)(19)