English verb conjugation
MUST DECEIVE

Regular verb: deceive - deceived - deceived

Affirmation

Simple form	V-ing form
I must deceive you must deceive he must deceive we must deceive you must deceive they must deceive	I must be deceiving you must be deceiving he must be deceiving we must be deceiving you must be deceiving they must be deceiving
Perfect	V-ing perfect
I must have deceived you must have deceived he must have deceived we must have deceived you must have deceived they must have deceived	I must have been deceiving you must have been deceiving he must have been deceiving we must have been deceiving you must have been deceiving they must have been deceiving

Negation

Simple form	V-ing form
I must not deceive you must not deceive he must not deceive we must not deceive you must not deceive they must not deceive	I must not be deceiving you must not be deceiving he must not be deceiving we must not be deceiving you must not be deceiving they must not be deceiving
Perfect	V-ing perfect
I must not have deceived you must not have deceived he must not have deceived we must not have deceived you must not have deceived they must not have deceived	I must not have been deceiving you must not have been deceiving he must not have been deceiving we must not have been deceiving you must not have been deceiving they must not have been deceiving

Interrogative form

Simple form	V-ing form
must I deceive? must you deceive? must he deceive? must we deceive? must you deceive? must they deceive?	must I be deceiving? must you be deceiving? must he be deceiving? must we be deceiving? must you be deceiving? must they be deceiving?
Perfect	V-ing perfect
must I have deceived? must you have deceived? must he have deceived? must we have deceived? must you have deceived? must they have deceived?	must I have been deceiving? must you have been deceiving? must he have been deceiving? must we have been deceiving? must you have been deceiving? must they have been deceiving?

Interro-negative form

Simple form	V-ing form
must I not deceive? must you not deceive? must he not deceive? must we not deceive? must you not deceive? must they not deceive?	must I not be deceiving? must you not be deceiving? must he not be deceiving? must we not be deceiving? must you not be deceiving? must they not be deceiving?
Perfect	V-ing perfect
must I not have deceived? must you not have deceived? must he not have deceived? must we not have deceived? must you not have deceived? must they not have deceived?	must I not have been deceiving? must you not have been deceiving? must he not have been deceiving? must we not have been deceiving? must you not have been deceiving? must they not have been deceiving?