1: (4 11 15)

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

2: (6 17 14)

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

3: (8 16 13)

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

4: (7 11 9)

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