might concenter
Regular verb: concenter - concentered- concentered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I might concenter
you might concenter
she might concenter
we might concenter
you might concenter
they might concenter 	I might be concentering
you might be concentering
she might be concentering
we might be concentering
you might be concentering
they might be concentering	I might have concentered
you might have concentered
she might have concentered
we might have concentered
you might have concentered
they might have concentered	I might have been concentering
you might have been concentering
she might have been concentering
we might have been concentering
you might have been concentering
they might have been concentering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mightn't concenter
you mightn't concenter
she mightn't concenter
we mightn't concenter
you mightn't concenter
they mightn't concenter 	I mightn't be concentering
you mightn't be concentering
she mightn't be concentering
we mightn't be concentering
you mightn't be concentering
they mightn't be concentering	I mightn't have concentered
you mightn't have concentered
she mightn't have concentered
we mightn't have concentered
you mightn't have concentered
they mightn't have concentered	I mightn't have been concentering
you mightn't have been concentering
she mightn't have been concentering
we mightn't have been concentering
you mightn't have been concentering
they mightn't have been concentering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
might I concenter?
might you concenter?
might she concenter?
might we concenter?
might you concenter?
might they concenter? 	might I be concentering?
might you be concentering?
might she be concentering?
might we be concentering?
might you be concentering?
might they be concentering? 	might I have concentered?
might you have concentered?
might she have concentered?
might we have concentered?
might you have concentered?
might they have concentered? 	might I have been concentering?
might you have been concentering?
might she have been concentering?
might we have been concentering?
might you have been concentering?
might they have been concentering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mightn't I concenter?
mightn't you concenter?
mightn't she concenter?
mightn't we concenter?
mightn't you concenter?
mightn't they concenter? 	mightn't I be concentering?
mightn't you be concentering?
mightn't she be concentering?
mightn't we be concentering?
mightn't you be concentering?
mightn't they be concentering? 	mightn't I have concentered?
mightn't you have concentered?
mightn't she have concentered?
mightn't we have concentered?
mightn't you have concentered?
mightn't they have concentered? 	mightn't I have been concentering?
mightn't you have been concentering?
mightn't she have been concentering?
mightn't we have been concentering?
mightn't you have been concentering?
mightn't they have been concentering?