Yes, caliptrix is right. The sentences he suggests are possible. Of course this is another issue.

If we check caliptrix's sentences we see that interestingly there are two different -i suffixes.

This one is the accusative case:

"Çocukları çok severim."
It is because the verb sevmek is transitive and takes accusative case as "-i sevmek".

This -i is a possessive suffix:
"Onların çocukları bahçede oyun oynuyorlar."

"onların çocukları" has the same structure as "benim arabam", "senin telefon numaran" etc. There is a possessive adjective in front (benim, senin, onun, onların) and a noun with a possessive suffix afterwards (çocukları, arabam, numaran etc).

Tesekkur ederim!!

Ama Lütfen Baylar... as you can see, these were my first sentences, now i'm very confused with the suffeeerrrixes
Give me a chance to understand the -de -da suffixes and plurar suffeerrixes!

And later i will try with possesives... lutfen lutfen