English verb conjugation
COULD PREFABRICATE

Regular verb: prefabricate - prefabricated - prefabricated

Affirmation

Simple form	V-ing form
I could prefabricate you could prefabricate she could prefabricate we could prefabricate you could prefabricate they could prefabricate	I could be prefabricating you could be prefabricating she could be prefabricating we could be prefabricating you could be prefabricating they could be prefabricating
Perfect	V-ing perfect
I could have prefabricated you could have prefabricated she could have prefabricated we could have prefabricated you could have prefabricated they could have prefabricated	I could have been prefabricating you could have been prefabricating she could have been prefabricating we could have been prefabricating you could have been prefabricating they could have been prefabricating

Negation

Simple form	V-ing form
I couldn't prefabricate you couldn't prefabricate she couldn't prefabricate we couldn't prefabricate you couldn't prefabricate they couldn't prefabricate	I couldn't be prefabricating you couldn't be prefabricating she couldn't be prefabricating we couldn't be prefabricating you couldn't be prefabricating they couldn't be prefabricating
Perfect	V-ing perfect
I couldn't have prefabricated you couldn't have prefabricated she couldn't have prefabricated we couldn't have prefabricated you couldn't have prefabricated they couldn't have prefabricated	I couldn't have been prefabricating you couldn't have been prefabricating she couldn't have been prefabricating we couldn't have been prefabricating you couldn't have been prefabricating they couldn't have been prefabricating

Interrogative form

Simple form	V-ing form
could I prefabricate? could you prefabricate? could she prefabricate? could we prefabricate? could you prefabricate? could they prefabricate?	could I be prefabricating? could you be prefabricating? could she be prefabricating? could we be prefabricating? could you be prefabricating? could they be prefabricating?
Perfect	V-ing perfect
could I have prefabricated? could you have prefabricated? could she have prefabricated? could we have prefabricated? could you have prefabricated? could they have prefabricated?	could I have been prefabricating? could you have been prefabricating? could she have been prefabricating? could we have been prefabricating? could you have been prefabricating? could they have been prefabricating?

Interro-negative form

Simple form	V-ing form
couldn't I prefabricate? couldn't you prefabricate? couldn't she prefabricate? couldn't we prefabricate? couldn't you prefabricate? couldn't they prefabricate?	couldn't I be prefabricating? couldn't you be prefabricating? couldn't she be prefabricating? couldn't we be prefabricating? couldn't you be prefabricating? couldn't they be prefabricating?
Perfect	V-ing perfect
couldn't I have prefabricated? couldn't you have prefabricated? couldn't she have prefabricated? couldn't we have prefabricated? couldn't you have prefabricated? couldn't they have prefabricated?	couldn't I have been prefabricating? couldn't you have been prefabricating? couldn't she have been prefabricating? couldn't we have been prefabricating? couldn't you have been prefabricating? couldn't they have been prefabricating?