I can hug you can hug she can hug we can hug you can hug they can hug
V-ing form
I can be hugging you can be hugging she can be hugging we can be hugging you can be hugging they can be hugging
Perfect
I can have hugged you can have hugged she can have hugged we can have hugged you can have hugged they can have hugged
V-ing perfect
I can have been hugging you can have been hugging she can have been hugging we can have been hugging you can have been hugging they can have been hugging
Negation
Simple form
I can't hug you can't hug she can't hug we can't hug you can't hug they can't hug
V-ing form
I can't be hugging you can't be hugging she can't be hugging we can't be hugging you can't be hugging they can't be hugging
Perfect
I can't have hugged you can't have hugged she can't have hugged we can't have hugged you can't have hugged they can't have hugged
V-ing perfect
I can't have been hugging you can't have been hugging she can't have been hugging we can't have been hugging you can't have been hugging they can't have been hugging
Interrogative form
Simple form
can I hug? can you hug? can she hug? can we hug? can you hug? can they hug?
V-ing form
can I be hugging? can you be hugging? can she be hugging? can we be hugging? can you be hugging? can they be hugging?
Perfect
can I have hugged? can you have hugged? can she have hugged? can we have hugged? can you have hugged? can they have hugged?
V-ing perfect
can I have been hugging? can you have been hugging? can she have been hugging? can we have been hugging? can you have been hugging? can they have been hugging?
Interro-negative form
Simple form
can't I hug? can't you hug? can't she hug? can't we hug? can't you hug? can't they hug?
V-ing form
can't I be hugging? can't you be hugging? can't she be hugging? can't we be hugging? can't you be hugging? can't they be hugging?
Perfect
can't I have hugged? can't you have hugged? can't she have hugged? can't we have hugged? can't you have hugged? can't they have hugged?
V-ing perfect
can't I have been hugging? can't you have been hugging? can't she have been hugging? can't we have been hugging? can't you have been hugging? can't they have been hugging?