I can limp you can limp he can limp we can limp you can limp they can limp
V-ing form
I can be limping you can be limping he can be limping we can be limping you can be limping they can be limping
Perfect
I can have limped you can have limped he can have limped we can have limped you can have limped they can have limped
V-ing perfect
I can have been limping you can have been limping he can have been limping we can have been limping you can have been limping they can have been limping
Negation
Simple form
I can't limp you can't limp he can't limp we can't limp you can't limp they can't limp
V-ing form
I can't be limping you can't be limping he can't be limping we can't be limping you can't be limping they can't be limping
Perfect
I can't have limped you can't have limped he can't have limped we can't have limped you can't have limped they can't have limped
V-ing perfect
I can't have been limping you can't have been limping he can't have been limping we can't have been limping you can't have been limping they can't have been limping
Interrogative form
Simple form
can I limp? can you limp? can he limp? can we limp? can you limp? can they limp?
V-ing form
can I be limping? can you be limping? can he be limping? can we be limping? can you be limping? can they be limping?
Perfect
can I have limped? can you have limped? can he have limped? can we have limped? can you have limped? can they have limped?
V-ing perfect
can I have been limping? can you have been limping? can he have been limping? can we have been limping? can you have been limping? can they have been limping?
Interro-negative form
Simple form
can't I limp? can't you limp? can't he limp? can't we limp? can't you limp? can't they limp?
V-ing form
can't I be limping? can't you be limping? can't he be limping? can't we be limping? can't you be limping? can't they be limping?
Perfect
can't I have limped? can't you have limped? can't he have limped? can't we have limped? can't you have limped? can't they have limped?
V-ing perfect
can't I have been limping? can't you have been limping? can't he have been limping? can't we have been limping? can't you have been limping? can't they have been limping?