English verb conjugation
CAN PREFAB

Regular verb: prefab - prefabed - prefabed

Affirmation

Simple form	V-ing form
I can prefab you can prefab he can prefab we can prefab you can prefab they can prefab	I can be prefabing you can be prefabing he can be prefabing we can be prefabing you can be prefabing they can be prefabing
Perfect	V-ing perfect
I can have prefabed you can have prefabed he can have prefabed we can have prefabed you can have prefabed they can have prefabed	I can have been prefabing you can have been prefabing he can have been prefabing we can have been prefabing you can have been prefabing they can have been prefabing

Negation

Simple form	V-ing form
I cannot prefab you cannot prefab he cannot prefab we cannot prefab you cannot prefab they cannot prefab	I cannot be prefabing you cannot be prefabing he cannot be prefabing we cannot be prefabing you cannot be prefabing they cannot be prefabing
Perfect	V-ing perfect
I cannot have prefabed you cannot have prefabed he cannot have prefabed we cannot have prefabed you cannot have prefabed they cannot have prefabed	I cannot have been prefabing you cannot have been prefabing he cannot have been prefabing we cannot have been prefabing you cannot have been prefabing they cannot have been prefabing

Interrogative form

Simple form	V-ing form
can I prefab? can you prefab? can he prefab? can we prefab? can you prefab? can they prefab?	can I be prefabing? can you be prefabing? can he be prefabing? can we be prefabing? can you be prefabing? can they be prefabing?
Perfect	V-ing perfect
can I have prefabed? can you have prefabed? can he have prefabed? can we have prefabed? can you have prefabed? can they have prefabed?	can I have been prefabing? can you have been prefabing? can he have been prefabing? can we have been prefabing? can you have been prefabing? can they have been prefabing?

Interro-negative form

Simple form	V-ing form
can I not prefab? can you not prefab? can he not prefab? can we not prefab? can you not prefab? can they not prefab?	can I not be prefabing? can you not be prefabing? can he not be prefabing? can we not be prefabing? can you not be prefabing? can they not be prefabing?
Perfect	V-ing perfect
can I not have prefabed? can you not have prefabed? can he not have prefabed? can we not have prefabed? can you not have prefabed? can they not have prefabed?	can I not have been prefabing? can you not have been prefabing? can he not have been prefabing? can we not have been prefabing? can you not have been prefabing? can they not have been prefabing?