1: (0 1 5)

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

2: (5 8 20)

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

3: (4 14 7)

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

4: (10 21 19)

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