1: (2 5 15)

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

2: (4 20 7)

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

3: (2 5 15)

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

4: (1 18 3)

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