The last word in line 6 has a yod edited to the beginning of the word. It is written with the same blotting ink that the other corrections were made with. There appears to have been a word written at the end of the text just off center which corresponds to about line 20. The first two letters seem to be aleph beth or mem. The last word in the line must have been reedited first and then the diagonal word did not have enough space left to insert the word due to the hand and runny ink the scribe was using and the absorbent nature of the deteriorating leather that he was working with.
Q is obscure.
In Q the last word is fairly easily seen.