could flounder
Regular verb: flounder - floundered- floundered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could flounder
you could flounder
he could flounder
we could flounder
you could flounder
they could flounder 	I could be floundering
you could be floundering
he could be floundering
we could be floundering
you could be floundering
they could be floundering	I could have floundered
you could have floundered
he could have floundered
we could have floundered
you could have floundered
they could have floundered	I could have been floundering
you could have been floundering
he could have been floundering
we could have been floundering
you could have been floundering
they could have been floundering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't flounder
you couldn't flounder
he couldn't flounder
we couldn't flounder
you couldn't flounder
they couldn't flounder 	I couldn't be floundering
you couldn't be floundering
he couldn't be floundering
we couldn't be floundering
you couldn't be floundering
they couldn't be floundering	I couldn't have floundered
you couldn't have floundered
he couldn't have floundered
we couldn't have floundered
you couldn't have floundered
they couldn't have floundered	I couldn't have been floundering
you couldn't have been floundering
he couldn't have been floundering
we couldn't have been floundering
you couldn't have been floundering
they couldn't have been floundering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I flounder?
could you flounder?
could he flounder?
could we flounder?
could you flounder?
could they flounder? 	could I be floundering?
could you be floundering?
could he be floundering?
could we be floundering?
could you be floundering?
could they be floundering? 	could I have floundered?
could you have floundered?
could he have floundered?
could we have floundered?
could you have floundered?
could they have floundered? 	could I have been floundering?
could you have been floundering?
could he have been floundering?
could we have been floundering?
could you have been floundering?
could they have been floundering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I flounder?
couldn't you flounder?
couldn't he flounder?
couldn't we flounder?
couldn't you flounder?
couldn't they flounder? 	couldn't I be floundering?
couldn't you be floundering?
couldn't he be floundering?
couldn't we be floundering?
couldn't you be floundering?
couldn't they be floundering? 	couldn't I have floundered?
couldn't you have floundered?
couldn't he have floundered?
couldn't we have floundered?
couldn't you have floundered?
couldn't they have floundered? 	couldn't I have been floundering?
couldn't you have been floundering?
couldn't he have been floundering?
couldn't we have been floundering?
couldn't you have been floundering?
couldn't they have been floundering?