I must handwash you must handwash she must handwash we must handwash you must handwash they must handwash
V-ing form
I must be handwashing you must be handwashing she must be handwashing we must be handwashing you must be handwashing they must be handwashing
Perfect
I must have handwashed you must have handwashed she must have handwashed we must have handwashed you must have handwashed they must have handwashed
V-ing perfect
I must have been handwashing you must have been handwashing she must have been handwashing we must have been handwashing you must have been handwashing they must have been handwashing
Negation
Simple form
I must not handwash you must not handwash she must not handwash we must not handwash you must not handwash they must not handwash
V-ing form
I must not be handwashing you must not be handwashing she must not be handwashing we must not be handwashing you must not be handwashing they must not be handwashing
Perfect
I must not have handwashed you must not have handwashed she must not have handwashed we must not have handwashed you must not have handwashed they must not have handwashed
V-ing perfect
I must not have been handwashing you must not have been handwashing she must not have been handwashing we must not have been handwashing you must not have been handwashing they must not have been handwashing
Interrogative form
Simple form
must I handwash? must you handwash? must she handwash? must we handwash? must you handwash? must they handwash?
V-ing form
must I be handwashing? must you be handwashing? must she be handwashing? must we be handwashing? must you be handwashing? must they be handwashing?
Perfect
must I have handwashed? must you have handwashed? must she have handwashed? must we have handwashed? must you have handwashed? must they have handwashed?
V-ing perfect
must I have been handwashing? must you have been handwashing? must she have been handwashing? must we have been handwashing? must you have been handwashing? must they have been handwashing?
Interro-negative form
Simple form
must I not handwash? must you not handwash? must she not handwash? must we not handwash? must you not handwash? must they not handwash?
V-ing form
must I not be handwashing? must you not be handwashing? must she not be handwashing? must we not be handwashing? must you not be handwashing? must they not be handwashing?
Perfect
must I not have handwashed? must you not have handwashed? must she not have handwashed? must we not have handwashed? must you not have handwashed? must they not have handwashed?
V-ing perfect
must I not have been handwashing? must you not have been handwashing? must she not have been handwashing? must we not have been handwashing? must you not have been handwashing? must they not have been handwashing?