1: (0 3 12)

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

2: (6 12 21)

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

3: (4 15 8)

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

4: (5 9 7)

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