I can number you can number she can number we can number you can number they can number
V-ing form
I can be numbering you can be numbering she can be numbering we can be numbering you can be numbering they can be numbering
Perfect
I can have numbered you can have numbered she can have numbered we can have numbered you can have numbered they can have numbered
V-ing perfect
I can have been numbering you can have been numbering she can have been numbering we can have been numbering you can have been numbering they can have been numbering
Negation
Simple form
I can't number you can't number she can't number we can't number you can't number they can't number
V-ing form
I can't be numbering you can't be numbering she can't be numbering we can't be numbering you can't be numbering they can't be numbering
Perfect
I can't have numbered you can't have numbered she can't have numbered we can't have numbered you can't have numbered they can't have numbered
V-ing perfect
I can't have been numbering you can't have been numbering she can't have been numbering we can't have been numbering you can't have been numbering they can't have been numbering
Interrogative form
Simple form
can I number? can you number? can she number? can we number? can you number? can they number?
V-ing form
can I be numbering? can you be numbering? can she be numbering? can we be numbering? can you be numbering? can they be numbering?
Perfect
can I have numbered? can you have numbered? can she have numbered? can we have numbered? can you have numbered? can they have numbered?
V-ing perfect
can I have been numbering? can you have been numbering? can she have been numbering? can we have been numbering? can you have been numbering? can they have been numbering?
Interro-negative form
Simple form
can't I number? can't you number? can't she number? can't we number? can't you number? can't they number?
V-ing form
can't I be numbering? can't you be numbering? can't she be numbering? can't we be numbering? can't you be numbering? can't they be numbering?
Perfect
can't I have numbered? can't you have numbered? can't she have numbered? can't we have numbered? can't you have numbered? can't they have numbered?
V-ing perfect
can't I have been numbering? can't you have been numbering? can't she have been numbering? can't we have been numbering? can't you have been numbering? can't they have been numbering?