can build
Irregular verb: build - built- built

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can build
you can build
he can build
we can build
you can build
they can build 	I can be building
you can be building
he can be building
we can be building
you can be building
they can be building	I can have built
you can have built
he can have built
we can have built
you can have built
they can have built	I can have been building
you can have been building
he can have been building
we can have been building
you can have been building
they can have been building	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot build
you cannot build
he cannot build
we cannot build
you cannot build
they cannot build 	I cannot be building
you cannot be building
he cannot be building
we cannot be building
you cannot be building
they cannot be building	I cannot have built
you cannot have built
he cannot have built
we cannot have built
you cannot have built
they cannot have built	I cannot have been building
you cannot have been building
he cannot have been building
we cannot have been building
you cannot have been building
they cannot have been building	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I build?
can you build?
can he build?
can we build?
can you build?
can they build? 	can I be building?
can you be building?
can he be building?
can we be building?
can you be building?
can they be building? 	can I have built?
can you have built?
can he have built?
can we have built?
can you have built?
can they have built? 	can I have been building?
can you have been building?
can he have been building?
can we have been building?
can you have been building?
can they have been building? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not build?
can you not build?
can he not build?
can we not build?
can you not build?
can they not build? 	can I not be building?
can you not be building?
can he not be building?
can we not be building?
can you not be building?
can they not be building? 	can I not have built?
can you not have built?
can he not have built?
can we not have built?
can you not have built?
can they not have built? 	can I not have been building?
can you not have been building?
can he not have been building?
can we not have been building?
can you not have been building?
can they not have been building?