Maybe or May be?
Your choice!
Maybe
Exemple : ‘’It could be possible, maybe!’’
"Maybe" and "may be" have different uses. "Maybe" written as one word is used as an adverb as a synonym of the word "perhaps."
May be
Exemple : ‘’There may be a chance that you can come with us!’’
"May be" written as two words is a composition of "may" functioning as a modal verb and "be" functioning as either the auxiliary or main verb.