1: (1 4 7)

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

2: (3 20 6)

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

3: (1 4 7)

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

4: (0 16 2)

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