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 can't lug you can't lug he 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 he 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 he 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 he 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 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't I lug? can't you lug? can't he 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 he 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 he 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 he have been lugging? can't we have been lugging? can't you have been lugging? can't they have been lugging?