1: (0 1 3)

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

2: (3 8 20)

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

3: (2 18 7)

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

4: (15 21 19)

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