6 models P to U of a particular product are lined for inspection. They are not…

6 models P to U of a particular product are lined for inspection.

They are not necessarily arranged in that order. These models are distributed among 8 locations.

The known conditions are

A. Model T is at position 7.

B. The two models nearest to T are Q and R, and they are on different sides of T.

C. Exactly two of the given six models are next to empty locations.

D. 3 is not an empty location

E. There are two empty locations

For how many of the locations, can it be said with certainty that a

certain model P, Q, R, S, T, U exists or that the location is empty?