1: (4 6 10)

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

2: (5 12 8)

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

3: (4 6 10)

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

4: (9 18 11)

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