could prebuild
Irregular verb: prebuild - prebuilt- prebuilt

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could prebuild
you could prebuild
she could prebuild
we could prebuild
you could prebuild
they could prebuild 	I could be prebuilding
you could be prebuilding
she could be prebuilding
we could be prebuilding
you could be prebuilding
they could be prebuilding	I could have prebuilt
you could have prebuilt
she 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
she 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 	Perfect 	V-ing perfect 	
I couldn't prebuild
you couldn't prebuild
she 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
she couldn't be prebuilding
we couldn't be prebuilding
you couldn't be prebuilding
they couldn't be prebuilding	I couldn't have prebuilt
you couldn't have prebuilt
she 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
she 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 	Perfect 	V-ing perfect 	
could I prebuild?
could you prebuild?
could she prebuild?
could we prebuild?
could you prebuild?
could they prebuild? 	could I be prebuilding?
could you be prebuilding?
could she be prebuilding?
could we be prebuilding?
could you be prebuilding?
could they be prebuilding? 	could I have prebuilt?
could you have prebuilt?
could she 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 she 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 	Perfect 	V-ing perfect 	
couldn't I prebuild?
couldn't you prebuild?
couldn't she 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 she be prebuilding?
couldn't we be prebuilding?
couldn't you be prebuilding?
couldn't they be prebuilding? 	couldn't I have prebuilt?
couldn't you have prebuilt?
couldn't she 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 she have been prebuilding?
couldn't we have been prebuilding?
couldn't you have been prebuilding?
couldn't they have been prebuilding?