could converge
Regular verb: converge - converged- converged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could converge
you could converge
she could converge
we could converge
you could converge
they could converge 	I could be converging
you could be converging
she could be converging
we could be converging
you could be converging
they could be converging	I could have converged
you could have converged
she could have converged
we could have converged
you could have converged
they could have converged	I could have been converging
you could have been converging
she could have been converging
we could have been converging
you could have been converging
they could have been converging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't converge
you couldn't converge
she couldn't converge
we couldn't converge
you couldn't converge
they couldn't converge 	I couldn't be converging
you couldn't be converging
she couldn't be converging
we couldn't be converging
you couldn't be converging
they couldn't be converging	I couldn't have converged
you couldn't have converged
she couldn't have converged
we couldn't have converged
you couldn't have converged
they couldn't have converged	I couldn't have been converging
you couldn't have been converging
she couldn't have been converging
we couldn't have been converging
you couldn't have been converging
they couldn't have been converging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I converge?
could you converge?
could she converge?
could we converge?
could you converge?
could they converge? 	could I be converging?
could you be converging?
could she be converging?
could we be converging?
could you be converging?
could they be converging? 	could I have converged?
could you have converged?
could she have converged?
could we have converged?
could you have converged?
could they have converged? 	could I have been converging?
could you have been converging?
could she have been converging?
could we have been converging?
could you have been converging?
could they have been converging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I converge?
couldn't you converge?
couldn't she converge?
couldn't we converge?
couldn't you converge?
couldn't they converge? 	couldn't I be converging?
couldn't you be converging?
couldn't she be converging?
couldn't we be converging?
couldn't you be converging?
couldn't they be converging? 	couldn't I have converged?
couldn't you have converged?
couldn't she have converged?
couldn't we have converged?
couldn't you have converged?
couldn't they have converged? 	couldn't I have been converging?
couldn't you have been converging?
couldn't she have been converging?
couldn't we have been converging?
couldn't you have been converging?
couldn't they have been converging?