1: (1 4 7)

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

2: (3 21 5)

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

3: (0 20 2)

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

4: (1 4 7)

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