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 can't interpolate you can't interpolate he can't interpolate we can't interpolate you can't interpolate they can't interpolate
V-ing form
I can't be interpolating you can't be interpolating he can't be interpolating we can't be interpolating you can't be interpolating they can't be interpolating
Perfect
I can't have interpolated you can't have interpolated he can't have interpolated we can't have interpolated you can't have interpolated they can't have interpolated
V-ing perfect
I can't have been interpolating you can't have been interpolating he can't have been interpolating we can't have been interpolating you can't have been interpolating they can't 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't I interpolate? can't you interpolate? can't he interpolate? can't we interpolate? can't you interpolate? can't they interpolate?
V-ing form
can't I be interpolating? can't you be interpolating? can't he be interpolating? can't we be interpolating? can't you be interpolating? can't they be interpolating?
Perfect
can't I have interpolated? can't you have interpolated? can't he have interpolated? can't we have interpolated? can't you have interpolated? can't they have interpolated?
V-ing perfect
can't I have been interpolating? can't you have been interpolating? can't he have been interpolating? can't we have been interpolating? can't you have been interpolating? can't they have been interpolating?