1: (4 11 15)

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

2: (3 13 5)

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

3: (4 11 15)

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

4: (9 14 12)

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