Table instructors / subjects

EnglishMathPhysicsSums
1M. X 0
2B. Affleck1 1
3B. Willis 1 1
4R. DeNiro 1 1
1113

Table instructors / rooms

R1R2R3Sums
1M. X 0
2B. Affleck 1 1
3B. Willis1 1
4R. DeNiro 1 1
1113

Table subjects / rooms

R1R2R3Sums
1S??? 0
2English 1 1
3Math1 1
4Physics 1 1
1113