1: (1 6 12)

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

2: (4 16 11)

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

3: (5 17 7)

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

4: (3 8 12)

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