1: (1 7 13)

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

2: (3 20 8)

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

3: (1 7 13)

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

4: (0 17 2)

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