I can pancake you can pancake she can pancake we can pancake you can pancake they can pancake
V-ing form
I can be pancaking you can be pancaking she can be pancaking we can be pancaking you can be pancaking they can be pancaking
Perfect
I can have pancaked you can have pancaked she can have pancaked we can have pancaked you can have pancaked they can have pancaked
V-ing perfect
I can have been pancaking you can have been pancaking she can have been pancaking we can have been pancaking you can have been pancaking they can have been pancaking
Negation
Simple form
I can't pancake you can't pancake she can't pancake we can't pancake you can't pancake they can't pancake
V-ing form
I can't be pancaking you can't be pancaking she can't be pancaking we can't be pancaking you can't be pancaking they can't be pancaking
Perfect
I can't have pancaked you can't have pancaked she can't have pancaked we can't have pancaked you can't have pancaked they can't have pancaked
V-ing perfect
I can't have been pancaking you can't have been pancaking she can't have been pancaking we can't have been pancaking you can't have been pancaking they can't have been pancaking
Interrogative form
Simple form
can I pancake? can you pancake? can she pancake? can we pancake? can you pancake? can they pancake?
V-ing form
can I be pancaking? can you be pancaking? can she be pancaking? can we be pancaking? can you be pancaking? can they be pancaking?
Perfect
can I have pancaked? can you have pancaked? can she have pancaked? can we have pancaked? can you have pancaked? can they have pancaked?
V-ing perfect
can I have been pancaking? can you have been pancaking? can she have been pancaking? can we have been pancaking? can you have been pancaking? can they have been pancaking?
Interro-negative form
Simple form
can't I pancake? can't you pancake? can't she pancake? can't we pancake? can't you pancake? can't they pancake?
V-ing form
can't I be pancaking? can't you be pancaking? can't she be pancaking? can't we be pancaking? can't you be pancaking? can't they be pancaking?
Perfect
can't I have pancaked? can't you have pancaked? can't she have pancaked? can't we have pancaked? can't you have pancaked? can't they have pancaked?
V-ing perfect
can't I have been pancaking? can't you have been pancaking? can't she have been pancaking? can't we have been pancaking? can't you have been pancaking? can't they have been pancaking?