1: (7 9 16)

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

2: (1 5 16)

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

3: (4 17 6)

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

4: (3 12 8)

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