In a school, there are four Primary 5 clases. There are 2 monitors in each class. For every fortnight's monitor meeting, only one monitor from each class is required to attend.
A,B,C,D attended the first meeting.
E,B,F,D attended the second meeting.
A,E,B and G attended the third meeting.
If H had not attended any of these meetings, state the two monitors in each class.