I can extrapolate you can extrapolate he can extrapolate we can extrapolate you can extrapolate they can extrapolate
V-ing form
I can be extrapolating you can be extrapolating he can be extrapolating we can be extrapolating you can be extrapolating they can be extrapolating
Perfect
I can have extrapolated you can have extrapolated he can have extrapolated we can have extrapolated you can have extrapolated they can have extrapolated
V-ing perfect
I can have been extrapolating you can have been extrapolating he can have been extrapolating we can have been extrapolating you can have been extrapolating they can have been extrapolating
Negation
Simple form
I can't extrapolate you can't extrapolate he can't extrapolate we can't extrapolate you can't extrapolate they can't extrapolate
V-ing form
I can't be extrapolating you can't be extrapolating he can't be extrapolating we can't be extrapolating you can't be extrapolating they can't be extrapolating
Perfect
I can't have extrapolated you can't have extrapolated he can't have extrapolated we can't have extrapolated you can't have extrapolated they can't have extrapolated
V-ing perfect
I can't have been extrapolating you can't have been extrapolating he can't have been extrapolating we can't have been extrapolating you can't have been extrapolating they can't have been extrapolating
Interrogative form
Simple form
can I extrapolate? can you extrapolate? can he extrapolate? can we extrapolate? can you extrapolate? can they extrapolate?
V-ing form
can I be extrapolating? can you be extrapolating? can he be extrapolating? can we be extrapolating? can you be extrapolating? can they be extrapolating?
Perfect
can I have extrapolated? can you have extrapolated? can he have extrapolated? can we have extrapolated? can you have extrapolated? can they have extrapolated?
V-ing perfect
can I have been extrapolating? can you have been extrapolating? can he have been extrapolating? can we have been extrapolating? can you have been extrapolating? can they have been extrapolating?
Interro-negative form
Simple form
can't I extrapolate? can't you extrapolate? can't he extrapolate? can't we extrapolate? can't you extrapolate? can't they extrapolate?
V-ing form
can't I be extrapolating? can't you be extrapolating? can't he be extrapolating? can't we be extrapolating? can't you be extrapolating? can't they be extrapolating?
Perfect
can't I have extrapolated? can't you have extrapolated? can't he have extrapolated? can't we have extrapolated? can't you have extrapolated? can't they have extrapolated?
V-ing perfect
can't I have been extrapolating? can't you have been extrapolating? can't he have been extrapolating? can't we have been extrapolating? can't you have been extrapolating? can't they have been extrapolating?