1: (4 10 15)

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

2: (6 16 13)

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

3: (5 12 7)

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

4: (2 8 4)

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