I can lug you can lug she can lug we can lug you can lug they can lug
V-ing form
I can be lugging you can be lugging she can be lugging we can be lugging you can be lugging they can be lugging
Perfect
I can have lugged you can have lugged she 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 she can have been lugging we can have been lugging you can have been lugging they can have been lugging
Negation
Simple form
I can't lug you can't lug she can't lug we can't lug you can't lug they can't lug
V-ing form
I can't be lugging you can't be lugging she can't be lugging we can't be lugging you can't be lugging they can't be lugging
Perfect
I can't have lugged you can't have lugged she can't have lugged we can't have lugged you can't have lugged they can't have lugged
V-ing perfect
I can't have been lugging you can't have been lugging she can't have been lugging we can't have been lugging you can't have been lugging they can't have been lugging
Interrogative form
Simple form
can I lug? can you lug? can she lug? can we lug? can you lug? can they lug?
V-ing form
can I be lugging? can you be lugging? can she be lugging? can we be lugging? can you be lugging? can they be lugging?
Perfect
can I have lugged? can you have lugged? can she 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 she have been lugging? can we have been lugging? can you have been lugging? can they have been lugging?
Interro-negative form
Simple form
can't I lug? can't you lug? can't she lug? can't we lug? can't you lug? can't they lug?
V-ing form
can't I be lugging? can't you be lugging? can't she be lugging? can't we be lugging? can't you be lugging? can't they be lugging?
Perfect
can't I have lugged? can't you have lugged? can't she have lugged? can't we have lugged? can't you have lugged? can't they have lugged?
V-ing perfect
can't I have been lugging? can't you have been lugging? can't she have been lugging? can't we have been lugging? can't you have been lugging? can't they have been lugging?