could charm
Regular verb: charm - charmed- charmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could charm
you could charm
he could charm
we could charm
you could charm
they could charm 	I could be charming
you could be charming
he could be charming
we could be charming
you could be charming
they could be charming	I could have charmed
you could have charmed
he could have charmed
we could have charmed
you could have charmed
they could have charmed	I could have been charming
you could have been charming
he could have been charming
we could have been charming
you could have been charming
they could have been charming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not charm
you could not charm
he could not charm
we could not charm
you could not charm
they could not charm 	I could not be charming
you could not be charming
he could not be charming
we could not be charming
you could not be charming
they could not be charming	I could not have charmed
you could not have charmed
he could not have charmed
we could not have charmed
you could not have charmed
they could not have charmed	I could not have been charming
you could not have been charming
he could not have been charming
we could not have been charming
you could not have been charming
they could not have been charming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I charm?
could you charm?
could he charm?
could we charm?
could you charm?
could they charm? 	could I be charming?
could you be charming?
could he be charming?
could we be charming?
could you be charming?
could they be charming? 	could I have charmed?
could you have charmed?
could he have charmed?
could we have charmed?
could you have charmed?
could they have charmed? 	could I have been charming?
could you have been charming?
could he have been charming?
could we have been charming?
could you have been charming?
could they have been charming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not charm?
could you not charm?
could he not charm?
could we not charm?
could you not charm?
could they not charm? 	could I not be charming?
could you not be charming?
could he not be charming?
could we not be charming?
could you not be charming?
could they not be charming? 	could I not have charmed?
could you not have charmed?
could he not have charmed?
could we not have charmed?
could you not have charmed?
could they not have charmed? 	could I not have been charming?
could you not have been charming?
could he not have been charming?
could we not have been charming?
could you not have been charming?
could they not have been charming?