1: (5 10 20)

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

2: (4 12 6)

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

3: (5 10 20)

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

4: (8 13 11)

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