Let's look at the 2-deeps on the 3 best teams on our schedule. They are in order of LT, LG, C, RG, RT, TE. In most cases, but not all when it list Fr, it is a R-Fr. When it list for example Sr-Jr, it means: starter-1st back-up.
Clemson- Jr-Fr, So-Fr, So-Fr, Jr-So, Jr-Fr uga- Sr-Fr, Sr-Fr...