I can rest you can rest he can rest we can rest you can rest they can rest
V-ing form
I can be resting you can be resting he can be resting we can be resting you can be resting they can be resting
Perfect
I can have rested you can have rested he can have rested we can have rested you can have rested they can have rested
V-ing perfect
I can have been resting you can have been resting he can have been resting we can have been resting you can have been resting they can have been resting
Negation
Simple form
I can't rest you can't rest he can't rest we can't rest you can't rest they can't rest
V-ing form
I can't be resting you can't be resting he can't be resting we can't be resting you can't be resting they can't be resting
Perfect
I can't have rested you can't have rested he can't have rested we can't have rested you can't have rested they can't have rested
V-ing perfect
I can't have been resting you can't have been resting he can't have been resting we can't have been resting you can't have been resting they can't have been resting
Interrogative form
Simple form
can I rest? can you rest? can he rest? can we rest? can you rest? can they rest?
V-ing form
can I be resting? can you be resting? can he be resting? can we be resting? can you be resting? can they be resting?
Perfect
can I have rested? can you have rested? can he have rested? can we have rested? can you have rested? can they have rested?
V-ing perfect
can I have been resting? can you have been resting? can he have been resting? can we have been resting? can you have been resting? can they have been resting?
Interro-negative form
Simple form
can't I rest? can't you rest? can't he rest? can't we rest? can't you rest? can't they rest?
V-ing form
can't I be resting? can't you be resting? can't he be resting? can't we be resting? can't you be resting? can't they be resting?
Perfect
can't I have rested? can't you have rested? can't he have rested? can't we have rested? can't you have rested? can't they have rested?
V-ing perfect
can't I have been resting? can't you have been resting? can't he have been resting? can't we have been resting? can't you have been resting? can't they have been resting?