4
1 A 2 3C no
2 A 3 3A yes
2 A 4 3D yes
2 A 1 3C no

no
4

6
1 A 2 3C no
2 A 3 3A yes
2 A 4 3D yes
2 A 1 3B no
1 A 4 5B yes
1 Q 5

yes