English verb conjugation
COULD CATCH

Irregular verb: catch - caught - caught

Affirmation

Simple form	V-ing form
I could catch you could catch he could catch we could catch you could catch they could catch	I could be catching you could be catching he could be catching we could be catching you could be catching they could be catching
Perfect	V-ing perfect
I could have caught you could have caught he could have caught we could have caught you could have caught they could have caught	I could have been catching you could have been catching he could have been catching we could have been catching you could have been catching they could have been catching

Negation

Simple form	V-ing form
I couldn't catch you couldn't catch he couldn't catch we couldn't catch you couldn't catch they couldn't catch	I couldn't be catching you couldn't be catching he couldn't be catching we couldn't be catching you couldn't be catching they couldn't be catching
Perfect	V-ing perfect
I couldn't have caught you couldn't have caught he couldn't have caught we couldn't have caught you couldn't have caught they couldn't have caught	I couldn't have been catching you couldn't have been catching he couldn't have been catching we couldn't have been catching you couldn't have been catching they couldn't have been catching

Interrogative form

Simple form	V-ing form
could I catch? could you catch? could he catch? could we catch? could you catch? could they catch?	could I be catching? could you be catching? could he be catching? could we be catching? could you be catching? could they be catching?
Perfect	V-ing perfect
could I have caught? could you have caught? could he have caught? could we have caught? could you have caught? could they have caught?	could I have been catching? could you have been catching? could he have been catching? could we have been catching? could you have been catching? could they have been catching?

Interro-negative form

Simple form	V-ing form
couldn't I catch? couldn't you catch? couldn't he catch? couldn't we catch? couldn't you catch? couldn't they catch?	couldn't I be catching? couldn't you be catching? couldn't he be catching? couldn't we be catching? couldn't you be catching? couldn't they be catching?
Perfect	V-ing perfect
couldn't I have caught? couldn't you have caught? couldn't he have caught? couldn't we have caught? couldn't you have caught? couldn't they have caught?	couldn't I have been catching? couldn't you have been catching? couldn't he have been catching? couldn't we have been catching? couldn't you have been catching? couldn't they have been catching?