1: (6 9 15)

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

2: (4 11 8)

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

3: (6 9 15)

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

4: (5 16 7)

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