English verb conjugation
CAN UNDERSCORE

Regular verb: underscore - underscored - underscored

Affirmation

Simple form	V-ing form
I can underscore you can underscore he can underscore we can underscore you can underscore they can underscore	I can be underscoring you can be underscoring he can be underscoring we can be underscoring you can be underscoring they can be underscoring
Perfect	V-ing perfect
I can have underscored you can have underscored he can have underscored we can have underscored you can have underscored they can have underscored	I can have been underscoring you can have been underscoring he can have been underscoring we can have been underscoring you can have been underscoring they can have been underscoring

Negation

Simple form	V-ing form
I cannot underscore you cannot underscore he cannot underscore we cannot underscore you cannot underscore they cannot underscore	I cannot be underscoring you cannot be underscoring he cannot be underscoring we cannot be underscoring you cannot be underscoring they cannot be underscoring
Perfect	V-ing perfect
I cannot have underscored you cannot have underscored he cannot have underscored we cannot have underscored you cannot have underscored they cannot have underscored	I cannot have been underscoring you cannot have been underscoring he cannot have been underscoring we cannot have been underscoring you cannot have been underscoring they cannot have been underscoring

Interrogative form

Simple form	V-ing form
can I underscore? can you underscore? can he underscore? can we underscore? can you underscore? can they underscore?	can I be underscoring? can you be underscoring? can he be underscoring? can we be underscoring? can you be underscoring? can they be underscoring?
Perfect	V-ing perfect
can I have underscored? can you have underscored? can he have underscored? can we have underscored? can you have underscored? can they have underscored?	can I have been underscoring? can you have been underscoring? can he have been underscoring? can we have been underscoring? can you have been underscoring? can they have been underscoring?

Interro-negative form

Simple form	V-ing form
can I not underscore? can you not underscore? can he not underscore? can we not underscore? can you not underscore? can they not underscore?	can I not be underscoring? can you not be underscoring? can he not be underscoring? can we not be underscoring? can you not be underscoring? can they not be underscoring?
Perfect	V-ing perfect
can I not have underscored? can you not have underscored? can he not have underscored? can we not have underscored? can you not have underscored? can they not have underscored?	can I not have been underscoring? can you not have been underscoring? can he not have been underscoring? can we not have been underscoring? can you not have been underscoring? can they not have been underscoring?