I must disdain you must disdain he must disdain we must disdain you must disdain they must disdain
V-ing form
I must be disdaining you must be disdaining he must be disdaining we must be disdaining you must be disdaining they must be disdaining
Perfect
I must have disdained you must have disdained he must have disdained we must have disdained you must have disdained they must have disdained
V-ing perfect
I must have been disdaining you must have been disdaining he must have been disdaining we must have been disdaining you must have been disdaining they must have been disdaining
Negation
Simple form
I must not disdain you must not disdain he must not disdain we must not disdain you must not disdain they must not disdain
V-ing form
I must not be disdaining you must not be disdaining he must not be disdaining we must not be disdaining you must not be disdaining they must not be disdaining
Perfect
I must not have disdained you must not have disdained he must not have disdained we must not have disdained you must not have disdained they must not have disdained
V-ing perfect
I must not have been disdaining you must not have been disdaining he must not have been disdaining we must not have been disdaining you must not have been disdaining they must not have been disdaining
Interrogative form
Simple form
must I disdain? must you disdain? must he disdain? must we disdain? must you disdain? must they disdain?
V-ing form
must I be disdaining? must you be disdaining? must he be disdaining? must we be disdaining? must you be disdaining? must they be disdaining?
Perfect
must I have disdained? must you have disdained? must he have disdained? must we have disdained? must you have disdained? must they have disdained?
V-ing perfect
must I have been disdaining? must you have been disdaining? must he have been disdaining? must we have been disdaining? must you have been disdaining? must they have been disdaining?
Interro-negative form
Simple form
must I not disdain? must you not disdain? must he not disdain? must we not disdain? must you not disdain? must they not disdain?
V-ing form
must I not be disdaining? must you not be disdaining? must he not be disdaining? must we not be disdaining? must you not be disdaining? must they not be disdaining?
Perfect
must I not have disdained? must you not have disdained? must he not have disdained? must we not have disdained? must you not have disdained? must they not have disdained?
V-ing perfect
must I not have been disdaining? must you not have been disdaining? must he not have been disdaining? must we not have been disdaining? must you not have been disdaining? must they not have been disdaining?