English verb conjugation
COULD PREBUILD

Irregular verb: prebuild - prebuilt - prebuilt

Affirmation

Simple form	V-ing form
I could prebuild you could prebuild he could prebuild we could prebuild you could prebuild they could prebuild	I could be prebuilding you could be prebuilding he could be prebuilding we could be prebuilding you could be prebuilding they could be prebuilding
Perfect	V-ing perfect
I could have prebuilt you could have prebuilt he could have prebuilt we could have prebuilt you could have prebuilt they could have prebuilt	I could have been prebuilding you could have been prebuilding he could have been prebuilding we could have been prebuilding you could have been prebuilding they could have been prebuilding

Negation

Simple form	V-ing form
I could not prebuild you could not prebuild he could not prebuild we could not prebuild you could not prebuild they could not prebuild	I could not be prebuilding you could not be prebuilding he could not be prebuilding we could not be prebuilding you could not be prebuilding they could not be prebuilding
Perfect	V-ing perfect
I could not have prebuilt you could not have prebuilt he could not have prebuilt we could not have prebuilt you could not have prebuilt they could not have prebuilt	I could not have been prebuilding you could not have been prebuilding he could not have been prebuilding we could not have been prebuilding you could not have been prebuilding they could not have been prebuilding

Interrogative form

Simple form	V-ing form
could I prebuild? could you prebuild? could he prebuild? could we prebuild? could you prebuild? could they prebuild?	could I be prebuilding? could you be prebuilding? could he be prebuilding? could we be prebuilding? could you be prebuilding? could they be prebuilding?
Perfect	V-ing perfect
could I have prebuilt? could you have prebuilt? could he have prebuilt? could we have prebuilt? could you have prebuilt? could they have prebuilt?	could I have been prebuilding? could you have been prebuilding? could he have been prebuilding? could we have been prebuilding? could you have been prebuilding? could they have been prebuilding?

Interro-negative form

Simple form	V-ing form
could I not prebuild? could you not prebuild? could he not prebuild? could we not prebuild? could you not prebuild? could they not prebuild?	could I not be prebuilding? could you not be prebuilding? could he not be prebuilding? could we not be prebuilding? could you not be prebuilding? could they not be prebuilding?
Perfect	V-ing perfect
could I not have prebuilt? could you not have prebuilt? could he not have prebuilt? could we not have prebuilt? could you not have prebuilt? could they not have prebuilt?	could I not have been prebuilding? could you not have been prebuilding? could he not have been prebuilding? could we not have been prebuilding? could you not have been prebuilding? could they not have been prebuilding?