1: (7 9 15)

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

2: (4 11 8)

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

3: (6 16 14)

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

4: (1 9 5)

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