In my A1-A2 textbook I have found a phrase "Qué os parece?" which means (as I understood it) "What do you (all) think? how does it look to you all?". And "parece" doesn´t have a specific ending for "vosotros". But I looked up "parecer" in SpanishDict and it says that the conjugation is quite regular, with all the endings: me parezco, te pareces, se parece, nos parecemos, os parecéis (!) and se parecen. I´m confused. How should one conjugate the verb "parecer", with or without the endings? What is the differencebetween these two situations? And what's the difference between "parecer" and "parecerse"?