1: (4 11 20)

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

2: (1 19 9)

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

3: (0 7 2)

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

4: (6 11 8)

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