English verb conjugation
COULD OVERBUILD

Irregular verb: overbuild - overbuilt - overbuilt

Affirmation

Simple form	V-ing form
I could overbuild you could overbuild she could overbuild we could overbuild you could overbuild they could overbuild	I could be overbuilding you could be overbuilding she could be overbuilding we could be overbuilding you could be overbuilding they could be overbuilding
Perfect	V-ing perfect
I could have overbuilt you could have overbuilt she could have overbuilt we could have overbuilt you could have overbuilt they could have overbuilt	I could have been overbuilding you could have been overbuilding she could have been overbuilding we could have been overbuilding you could have been overbuilding they could have been overbuilding

Negation

Simple form	V-ing form
I couldn't overbuild you couldn't overbuild she couldn't overbuild we couldn't overbuild you couldn't overbuild they couldn't overbuild	I couldn't be overbuilding you couldn't be overbuilding she couldn't be overbuilding we couldn't be overbuilding you couldn't be overbuilding they couldn't be overbuilding
Perfect	V-ing perfect
I couldn't have overbuilt you couldn't have overbuilt she couldn't have overbuilt we couldn't have overbuilt you couldn't have overbuilt they couldn't have overbuilt	I couldn't have been overbuilding you couldn't have been overbuilding she couldn't have been overbuilding we couldn't have been overbuilding you couldn't have been overbuilding they couldn't have been overbuilding

Interrogative form

Simple form	V-ing form
could I overbuild? could you overbuild? could she overbuild? could we overbuild? could you overbuild? could they overbuild?	could I be overbuilding? could you be overbuilding? could she be overbuilding? could we be overbuilding? could you be overbuilding? could they be overbuilding?
Perfect	V-ing perfect
could I have overbuilt? could you have overbuilt? could she have overbuilt? could we have overbuilt? could you have overbuilt? could they have overbuilt?	could I have been overbuilding? could you have been overbuilding? could she have been overbuilding? could we have been overbuilding? could you have been overbuilding? could they have been overbuilding?

Interro-negative form

Simple form	V-ing form
couldn't I overbuild? couldn't you overbuild? couldn't she overbuild? couldn't we overbuild? couldn't you overbuild? couldn't they overbuild?	couldn't I be overbuilding? couldn't you be overbuilding? couldn't she be overbuilding? couldn't we be overbuilding? couldn't you be overbuilding? couldn't they be overbuilding?
Perfect	V-ing perfect
couldn't I have overbuilt? couldn't you have overbuilt? couldn't she have overbuilt? couldn't we have overbuilt? couldn't you have overbuilt? couldn't they have overbuilt?	couldn't I have been overbuilding? couldn't you have been overbuilding? couldn't she have been overbuilding? couldn't we have been overbuilding? couldn't you have been overbuilding? couldn't they have been overbuilding?