1: (1 5 8)

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

2: (4 15 7)

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

3: (1 17 10)

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

4: (12 19 16)

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