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