1: (1 5 8)

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

2: (4 14 7)

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

3: (1 17 9)

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

4: (12 19 16)

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