English verb conjugation
MUST SEND

Irregular verb: send - sent - sent

Affirmation

Simple form	V-ing form
I must send you must send he must send we must send you must send they must send	I must be sending you must be sending he must be sending we must be sending you must be sending they must be sending
Perfect	V-ing perfect
I must have sent you must have sent he must have sent we must have sent you must have sent they must have sent	I must have been sending you must have been sending he must have been sending we must have been sending you must have been sending they must have been sending

Negation

Simple form	V-ing form
I must not send you must not send he must not send we must not send you must not send they must not send	I must not be sending you must not be sending he must not be sending we must not be sending you must not be sending they must not be sending
Perfect	V-ing perfect
I must not have sent you must not have sent he must not have sent we must not have sent you must not have sent they must not have sent	I must not have been sending you must not have been sending he must not have been sending we must not have been sending you must not have been sending they must not have been sending

Interrogative form

Simple form	V-ing form
must I send? must you send? must he send? must we send? must you send? must they send?	must I be sending? must you be sending? must he be sending? must we be sending? must you be sending? must they be sending?
Perfect	V-ing perfect
must I have sent? must you have sent? must he have sent? must we have sent? must you have sent? must they have sent?	must I have been sending? must you have been sending? must he have been sending? must we have been sending? must you have been sending? must they have been sending?

Interro-negative form

Simple form	V-ing form
must I not send? must you not send? must he not send? must we not send? must you not send? must they not send?	must I not be sending? must you not be sending? must he not be sending? must we not be sending? must you not be sending? must they not be sending?
Perfect	V-ing perfect
must I not have sent? must you not have sent? must he not have sent? must we not have sent? must you not have sent? must they not have sent?	must I not have been sending? must you not have been sending? must he not have been sending? must we not have been sending? must you not have been sending? must they not have been sending?