English verb conjugation
COULD MODEL

Regular verb: model - modelled - modelled

Affirmation

Simple form	V-ing form
I could model you could model she could model we could model you could model they could model	I could be modelling you could be modelling she could be modelling we could be modelling you could be modelling they could be modelling
Perfect	V-ing perfect
I could have modelled you could have modelled she could have modelled we could have modelled you could have modelled they could have modelled	I could have been modelling you could have been modelling she could have been modelling we could have been modelling you could have been modelling they could have been modelling

Negation

Simple form	V-ing form
I couldn't model you couldn't model she couldn't model we couldn't model you couldn't model they couldn't model	I couldn't be modelling you couldn't be modelling she couldn't be modelling we couldn't be modelling you couldn't be modelling they couldn't be modelling
Perfect	V-ing perfect
I couldn't have modelled you couldn't have modelled she couldn't have modelled we couldn't have modelled you couldn't have modelled they couldn't have modelled	I couldn't have been modelling you couldn't have been modelling she couldn't have been modelling we couldn't have been modelling you couldn't have been modelling they couldn't have been modelling

Interrogative form

Simple form	V-ing form
could I model? could you model? could she model? could we model? could you model? could they model?	could I be modelling? could you be modelling? could she be modelling? could we be modelling? could you be modelling? could they be modelling?
Perfect	V-ing perfect
could I have modelled? could you have modelled? could she have modelled? could we have modelled? could you have modelled? could they have modelled?	could I have been modelling? could you have been modelling? could she have been modelling? could we have been modelling? could you have been modelling? could they have been modelling?

Interro-negative form

Simple form	V-ing form
couldn't I model? couldn't you model? couldn't she model? couldn't we model? couldn't you model? couldn't they model?	couldn't I be modelling? couldn't you be modelling? couldn't she be modelling? couldn't we be modelling? couldn't you be modelling? couldn't they be modelling?
Perfect	V-ing perfect
couldn't I have modelled? couldn't you have modelled? couldn't she have modelled? couldn't we have modelled? couldn't you have modelled? couldn't they have modelled?	couldn't I have been modelling? couldn't you have been modelling? couldn't she have been modelling? couldn't we have been modelling? couldn't you have been modelling? couldn't they have been modelling?