1: (0 3 7)

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

2: (5 7 8)

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

3: (2 20 4)

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

4: (3 10 7)

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