1: (1 5 8)

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

2: (4 15 6)

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

3: (1 17 9)

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

4: (12 19 16)

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