English verb conjugation
CAN TIRE

Regular verb: tire - tired - tired

Affirmation

Simple form	V-ing form
I can tire you can tire she can tire we can tire you can tire they can tire	I can be tiring you can be tiring she can be tiring we can be tiring you can be tiring they can be tiring
Perfect	V-ing perfect
I can have tired you can have tired she can have tired we can have tired you can have tired they can have tired	I can have been tiring you can have been tiring she can have been tiring we can have been tiring you can have been tiring they can have been tiring

Negation

Simple form	V-ing form
I cannot tire you cannot tire she cannot tire we cannot tire you cannot tire they cannot tire	I cannot be tiring you cannot be tiring she cannot be tiring we cannot be tiring you cannot be tiring they cannot be tiring
Perfect	V-ing perfect
I cannot have tired you cannot have tired she cannot have tired we cannot have tired you cannot have tired they cannot have tired	I cannot have been tiring you cannot have been tiring she cannot have been tiring we cannot have been tiring you cannot have been tiring they cannot have been tiring

Interrogative form

Simple form	V-ing form
can I tire? can you tire? can she tire? can we tire? can you tire? can they tire?	can I be tiring? can you be tiring? can she be tiring? can we be tiring? can you be tiring? can they be tiring?
Perfect	V-ing perfect
can I have tired? can you have tired? can she have tired? can we have tired? can you have tired? can they have tired?	can I have been tiring? can you have been tiring? can she have been tiring? can we have been tiring? can you have been tiring? can they have been tiring?

Interro-negative form

Simple form	V-ing form
can I not tire? can you not tire? can she not tire? can we not tire? can you not tire? can they not tire?	can I not be tiring? can you not be tiring? can she not be tiring? can we not be tiring? can you not be tiring? can they not be tiring?
Perfect	V-ing perfect
can I not have tired? can you not have tired? can she not have tired? can we not have tired? can you not have tired? can they not have tired?	can I not have been tiring? can you not have been tiring? can she not have been tiring? can we not have been tiring? can you not have been tiring? can they not have been tiring?