1: (4 7 11)

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

2: (1 7 5)

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

3: (6 13 8)

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

4: (10 14 12)

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