English verb conjugation
CAN ENGINEER

Regular verb: engineer - engineered - engineered

Affirmation

Simple form	V-ing form
I can engineer you can engineer she can engineer we can engineer you can engineer they can engineer	I can be engineering you can be engineering she can be engineering we can be engineering you can be engineering they can be engineering
Perfect	V-ing perfect
I can have engineered you can have engineered she can have engineered we can have engineered you can have engineered they can have engineered	I can have been engineering you can have been engineering she can have been engineering we can have been engineering you can have been engineering they can have been engineering

Negation

Simple form	V-ing form
I can't engineer you can't engineer she can't engineer we can't engineer you can't engineer they can't engineer	I can't be engineering you can't be engineering she can't be engineering we can't be engineering you can't be engineering they can't be engineering
Perfect	V-ing perfect
I can't have engineered you can't have engineered she can't have engineered we can't have engineered you can't have engineered they can't have engineered	I can't have been engineering you can't have been engineering she can't have been engineering we can't have been engineering you can't have been engineering they can't have been engineering

Interrogative form

Simple form	V-ing form
can I engineer? can you engineer? can she engineer? can we engineer? can you engineer? can they engineer?	can I be engineering? can you be engineering? can she be engineering? can we be engineering? can you be engineering? can they be engineering?
Perfect	V-ing perfect
can I have engineered? can you have engineered? can she have engineered? can we have engineered? can you have engineered? can they have engineered?	can I have been engineering? can you have been engineering? can she have been engineering? can we have been engineering? can you have been engineering? can they have been engineering?

Interro-negative form

Simple form	V-ing form
can't I engineer? can't you engineer? can't she engineer? can't we engineer? can't you engineer? can't they engineer?	can't I be engineering? can't you be engineering? can't she be engineering? can't we be engineering? can't you be engineering? can't they be engineering?
Perfect	V-ing perfect
can't I have engineered? can't you have engineered? can't she have engineered? can't we have engineered? can't you have engineered? can't they have engineered?	can't I have been engineering? can't you have been engineering? can't she have been engineering? can't we have been engineering? can't you have been engineering? can't they have been engineering?