1: (4 7 15)

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

2: (3 11 5)

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

3: (4 7 15)

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

4: (10 17 12)

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