1: (1 5 15)

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

2: (3 20 7)

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

3: (1 5 15)

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

4: (0 19 2)

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