you going, what give me here, what do you have here, holy scripture, or something, ladies, look, chenkae proletariat, private property disappears, i understand, it disappears, it was yours, it became ours, it’s clear, it was your lich who wrote it, do the people of vladimir respect vladimir? do you want to give it to cards? but don’t you want 10 years for being anti-soviet, or what do you call the coil here? so maybe the tower will immediately hit the tower to protect you, what’s the reason for not firing, are you its top six? what, did you want to play at the blind man's buff? and you can kill me , but it’s very easy to crush yourself, it’s also just a crap, just like everyone else, just like me, the fact that you and i are no different, understand? did you return the book? our topic today is types of valency. and while i ’m writing, barentsev will answer us what valence does oxygen exhibit? can't hear varentsev? parentsev evaporated, who will tell us what valency oxygen exhibits? pauline, oxygen always exhibits valency two, well done, valency can be constant or variable, write it down