English verb conjugation
MUST HANDCUFF

Regular verb: handcuff - handcuffed - handcuffed

Affirmation

Simple form	V-ing form
I must handcuff you must handcuff he must handcuff we must handcuff you must handcuff they must handcuff	I must be handcuffing you must be handcuffing he must be handcuffing we must be handcuffing you must be handcuffing they must be handcuffing
Perfect	V-ing perfect
I must have handcuffed you must have handcuffed he must have handcuffed we must have handcuffed you must have handcuffed they must have handcuffed	I must have been handcuffing you must have been handcuffing he must have been handcuffing we must have been handcuffing you must have been handcuffing they must have been handcuffing

Negation

Simple form	V-ing form
I must not handcuff you must not handcuff he must not handcuff we must not handcuff you must not handcuff they must not handcuff	I must not be handcuffing you must not be handcuffing he must not be handcuffing we must not be handcuffing you must not be handcuffing they must not be handcuffing
Perfect	V-ing perfect
I must not have handcuffed you must not have handcuffed he must not have handcuffed we must not have handcuffed you must not have handcuffed they must not have handcuffed	I must not have been handcuffing you must not have been handcuffing he must not have been handcuffing we must not have been handcuffing you must not have been handcuffing they must not have been handcuffing

Interrogative form

Simple form	V-ing form
must I handcuff? must you handcuff? must he handcuff? must we handcuff? must you handcuff? must they handcuff?	must I be handcuffing? must you be handcuffing? must he be handcuffing? must we be handcuffing? must you be handcuffing? must they be handcuffing?
Perfect	V-ing perfect
must I have handcuffed? must you have handcuffed? must he have handcuffed? must we have handcuffed? must you have handcuffed? must they have handcuffed?	must I have been handcuffing? must you have been handcuffing? must he have been handcuffing? must we have been handcuffing? must you have been handcuffing? must they have been handcuffing?

Interro-negative form

Simple form	V-ing form
must I not handcuff? must you not handcuff? must he not handcuff? must we not handcuff? must you not handcuff? must they not handcuff?	must I not be handcuffing? must you not be handcuffing? must he not be handcuffing? must we not be handcuffing? must you not be handcuffing? must they not be handcuffing?
Perfect	V-ing perfect
must I not have handcuffed? must you not have handcuffed? must he not have handcuffed? must we not have handcuffed? must you not have handcuffed? must they not have handcuffed?	must I not have been handcuffing? must you not have been handcuffing? must he not have been handcuffing? must we not have been handcuffing? must you not have been handcuffing? must they not have been handcuffing?