@bendyourcircuit--I am better at this when I am talking. Maybe. But when I look at it in writing it seems totally strange to me.  So if I have a съм I need to to have a pronoun but otherwise I don't need to repeat the pronoun given the fact that the verb tenses conjugate differently--this I know. At least in theory.  Application of said rule is probably spotty. But in writing--what's the style rule?