1: (1 6 9)

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

2: (4 12 8)

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

3: (6 11 15)

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

4: (10 16 13)

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