I can lug you can lug he can lug we can lug you can lug they can lug
V-ing form
I can be lugging you can be lugging he can be lugging we can be lugging you can be lugging they can be lugging
Perfect
I can have lugged you can have lugged he can have lugged we can have lugged you can have lugged they can have lugged
V-ing perfect
I can have been lugging you can have been lugging he can have been lugging we can have been lugging you can have been lugging they can have been lugging
Negation
Simple form
I cannot lug you cannot lug he cannot lug we cannot lug you cannot lug they cannot lug
V-ing form
I cannot be lugging you cannot be lugging he cannot be lugging we cannot be lugging you cannot be lugging they cannot be lugging
Perfect
I cannot have lugged you cannot have lugged he cannot have lugged we cannot have lugged you cannot have lugged they cannot have lugged
V-ing perfect
I cannot have been lugging you cannot have been lugging he cannot have been lugging we cannot have been lugging you cannot have been lugging they cannot have been lugging
Interrogative form
Simple form
can I lug? can you lug? can he lug? can we lug? can you lug? can they lug?
V-ing form
can I be lugging? can you be lugging? can he be lugging? can we be lugging? can you be lugging? can they be lugging?
Perfect
can I have lugged? can you have lugged? can he have lugged? can we have lugged? can you have lugged? can they have lugged?
V-ing perfect
can I have been lugging? can you have been lugging? can he have been lugging? can we have been lugging? can you have been lugging? can they have been lugging?
Interro-negative form
Simple form
can I not lug? can you not lug? can he not lug? can we not lug? can you not lug? can they not lug?
V-ing form
can I not be lugging? can you not be lugging? can he not be lugging? can we not be lugging? can you not be lugging? can they not be lugging?
Perfect
can I not have lugged? can you not have lugged? can he not have lugged? can we not have lugged? can you not have lugged? can they not have lugged?
V-ing perfect
can I not have been lugging? can you not have been lugging? can he not have been lugging? can we not have been lugging? can you not have been lugging? can they not have been lugging?