English verb conjugation
COULD GLUE

Regular verb: glue - glued - glued

Affirmation

Simple form	V-ing form
I could glue you could glue he could glue we could glue you could glue they could glue	I could be gluing you could be gluing he could be gluing we could be gluing you could be gluing they could be gluing
Perfect	V-ing perfect
I could have glued you could have glued he could have glued we could have glued you could have glued they could have glued	I could have been gluing you could have been gluing he could have been gluing we could have been gluing you could have been gluing they could have been gluing

Negation

Simple form	V-ing form
I couldn't glue you couldn't glue he couldn't glue we couldn't glue you couldn't glue they couldn't glue	I couldn't be gluing you couldn't be gluing he couldn't be gluing we couldn't be gluing you couldn't be gluing they couldn't be gluing
Perfect	V-ing perfect
I couldn't have glued you couldn't have glued he couldn't have glued we couldn't have glued you couldn't have glued they couldn't have glued	I couldn't have been gluing you couldn't have been gluing he couldn't have been gluing we couldn't have been gluing you couldn't have been gluing they couldn't have been gluing

Interrogative form

Simple form	V-ing form
could I glue? could you glue? could he glue? could we glue? could you glue? could they glue?	could I be gluing? could you be gluing? could he be gluing? could we be gluing? could you be gluing? could they be gluing?
Perfect	V-ing perfect
could I have glued? could you have glued? could he have glued? could we have glued? could you have glued? could they have glued?	could I have been gluing? could you have been gluing? could he have been gluing? could we have been gluing? could you have been gluing? could they have been gluing?

Interro-negative form

Simple form	V-ing form
couldn't I glue? couldn't you glue? couldn't he glue? couldn't we glue? couldn't you glue? couldn't they glue?	couldn't I be gluing? couldn't you be gluing? couldn't he be gluing? couldn't we be gluing? couldn't you be gluing? couldn't they be gluing?
Perfect	V-ing perfect
couldn't I have glued? couldn't you have glued? couldn't he have glued? couldn't we have glued? couldn't you have glued? couldn't they have glued?	couldn't I have been gluing? couldn't you have been gluing? couldn't he have been gluing? couldn't we have been gluing? couldn't you have been gluing? couldn't they have been gluing?