English verb conjugation
CAN SIGHT

Regular verb: sight - sighted - sighted

Affirmation

Simple form	V-ing form
I can sight you can sight she can sight we can sight you can sight they can sight	I can be sighting you can be sighting she can be sighting we can be sighting you can be sighting they can be sighting
Perfect	V-ing perfect
I can have sighted you can have sighted she can have sighted we can have sighted you can have sighted they can have sighted	I can have been sighting you can have been sighting she can have been sighting we can have been sighting you can have been sighting they can have been sighting

Negation

Simple form	V-ing form
I can't sight you can't sight she can't sight we can't sight you can't sight they can't sight	I can't be sighting you can't be sighting she can't be sighting we can't be sighting you can't be sighting they can't be sighting
Perfect	V-ing perfect
I can't have sighted you can't have sighted she can't have sighted we can't have sighted you can't have sighted they can't have sighted	I can't have been sighting you can't have been sighting she can't have been sighting we can't have been sighting you can't have been sighting they can't have been sighting

Interrogative form

Simple form	V-ing form
can I sight? can you sight? can she sight? can we sight? can you sight? can they sight?	can I be sighting? can you be sighting? can she be sighting? can we be sighting? can you be sighting? can they be sighting?
Perfect	V-ing perfect
can I have sighted? can you have sighted? can she have sighted? can we have sighted? can you have sighted? can they have sighted?	can I have been sighting? can you have been sighting? can she have been sighting? can we have been sighting? can you have been sighting? can they have been sighting?

Interro-negative form

Simple form	V-ing form
can't I sight? can't you sight? can't she sight? can't we sight? can't you sight? can't they sight?	can't I be sighting? can't you be sighting? can't she be sighting? can't we be sighting? can't you be sighting? can't they be sighting?
Perfect	V-ing perfect
can't I have sighted? can't you have sighted? can't she have sighted? can't we have sighted? can't you have sighted? can't they have sighted?	can't I have been sighting? can't you have been sighting? can't she have been sighting? can't we have been sighting? can't you have been sighting? can't they have been sighting?