English verb conjugation
CAN LAG

Regular verb: lag - lagged - lagged

Affirmation

Simple form	V-ing form
I can lag you can lag he can lag we can lag you can lag they can lag	I can be lagging you can be lagging he can be lagging we can be lagging you can be lagging they can be lagging
Perfect	V-ing perfect
I can have lagged you can have lagged he can have lagged we can have lagged you can have lagged they can have lagged	I can have been lagging you can have been lagging he can have been lagging we can have been lagging you can have been lagging they can have been lagging

Negation

Simple form	V-ing form
I cannot lag you cannot lag he cannot lag we cannot lag you cannot lag they cannot lag	I cannot be lagging you cannot be lagging he cannot be lagging we cannot be lagging you cannot be lagging they cannot be lagging
Perfect	V-ing perfect
I cannot have lagged you cannot have lagged he cannot have lagged we cannot have lagged you cannot have lagged they cannot have lagged	I cannot have been lagging you cannot have been lagging he cannot have been lagging we cannot have been lagging you cannot have been lagging they cannot have been lagging

Interrogative form

Simple form	V-ing form
can I lag? can you lag? can he lag? can we lag? can you lag? can they lag?	can I be lagging? can you be lagging? can he be lagging? can we be lagging? can you be lagging? can they be lagging?
Perfect	V-ing perfect
can I have lagged? can you have lagged? can he have lagged? can we have lagged? can you have lagged? can they have lagged?	can I have been lagging? can you have been lagging? can he have been lagging? can we have been lagging? can you have been lagging? can they have been lagging?

Interro-negative form

Simple form	V-ing form
can I not lag? can you not lag? can he not lag? can we not lag? can you not lag? can they not lag?	can I not be lagging? can you not be lagging? can he not be lagging? can we not be lagging? can you not be lagging? can they not be lagging?
Perfect	V-ing perfect
can I not have lagged? can you not have lagged? can he not have lagged? can we not have lagged? can you not have lagged? can they not have lagged?	can I not have been lagging? can you not have been lagging? can he not have been lagging? can we not have been lagging? can you not have been lagging? can they not have been lagging?