I can interpolate you can interpolate he can interpolate we can interpolate you can interpolate they can interpolate
V-ing form
I can be interpolating you can be interpolating he can be interpolating we can be interpolating you can be interpolating they can be interpolating
Perfect
I can have interpolated you can have interpolated he can have interpolated we can have interpolated you can have interpolated they can have interpolated
V-ing perfect
I can have been interpolating you can have been interpolating he can have been interpolating we can have been interpolating you can have been interpolating they can have been interpolating
Negation
Simple form
I cannot interpolate you cannot interpolate he cannot interpolate we cannot interpolate you cannot interpolate they cannot interpolate
V-ing form
I cannot be interpolating you cannot be interpolating he cannot be interpolating we cannot be interpolating you cannot be interpolating they cannot be interpolating
Perfect
I cannot have interpolated you cannot have interpolated he cannot have interpolated we cannot have interpolated you cannot have interpolated they cannot have interpolated
V-ing perfect
I cannot have been interpolating you cannot have been interpolating he cannot have been interpolating we cannot have been interpolating you cannot have been interpolating they cannot have been interpolating
Interrogative form
Simple form
can I interpolate? can you interpolate? can he interpolate? can we interpolate? can you interpolate? can they interpolate?
V-ing form
can I be interpolating? can you be interpolating? can he be interpolating? can we be interpolating? can you be interpolating? can they be interpolating?
Perfect
can I have interpolated? can you have interpolated? can he have interpolated? can we have interpolated? can you have interpolated? can they have interpolated?
V-ing perfect
can I have been interpolating? can you have been interpolating? can he have been interpolating? can we have been interpolating? can you have been interpolating? can they have been interpolating?
Interro-negative form
Simple form
can I not interpolate? can you not interpolate? can he not interpolate? can we not interpolate? can you not interpolate? can they not interpolate?
V-ing form
can I not be interpolating? can you not be interpolating? can he not be interpolating? can we not be interpolating? can you not be interpolating? can they not be interpolating?
Perfect
can I not have interpolated? can you not have interpolated? can he not have interpolated? can we not have interpolated? can you not have interpolated? can they not have interpolated?
V-ing perfect
can I not have been interpolating? can you not have been interpolating? can he not have been interpolating? can we not have been interpolating? can you not have been interpolating? can they not have been interpolating?