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 couldn't prebuild you couldn't prebuild he couldn't prebuild we couldn't prebuild you couldn't prebuild they couldn't prebuild	I couldn't be prebuilding you couldn't be prebuilding he couldn't be prebuilding we couldn't be prebuilding you couldn't be prebuilding they couldn't be prebuilding
Perfect	V-ing perfect
I couldn't have prebuilt you couldn't have prebuilt he couldn't have prebuilt we couldn't have prebuilt you couldn't have prebuilt they couldn't have prebuilt	I couldn't have been prebuilding you couldn't have been prebuilding he couldn't have been prebuilding we couldn't have been prebuilding you couldn't have been prebuilding they couldn't 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
couldn't I prebuild? couldn't you prebuild? couldn't he prebuild? couldn't we prebuild? couldn't you prebuild? couldn't they prebuild?	couldn't I be prebuilding? couldn't you be prebuilding? couldn't he be prebuilding? couldn't we be prebuilding? couldn't you be prebuilding? couldn't they be prebuilding?
Perfect	V-ing perfect
couldn't I have prebuilt? couldn't you have prebuilt? couldn't he have prebuilt? couldn't we have prebuilt? couldn't you have prebuilt? couldn't they have prebuilt?	couldn't I have been prebuilding? couldn't you have been prebuilding? couldn't he have been prebuilding? couldn't we have been prebuilding? couldn't you have been prebuilding? couldn't they have been prebuilding?