Yes, 2 sisters. Not uncomplicated relationships. Me and next sis went through a lot together as adolescents (she didn't like me at the time) and we have a strong bond as a result. She relies on me in a crisis.
Younger sis, we didn't really grow up together and she was always with my mum, but we get on well, have a similar sense of humour and look more similar.
I've known my 2 big BILs for a long time and am close to them too. I keep in touch more than DH does. I'm not so close to the younger one since he left his wife for a younger woman and lied about it. Elder BIL is very communicative and spends more time on the phone than any other man I know.