English verb conjugation
CAN DECEIVE

Regular verb: deceive - deceived - deceived

Affirmation

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

Negation

Simple form	V-ing form
I can't deceive you can't deceive he can't deceive we can't deceive you can't deceive they can't deceive	I can't be deceiving you can't be deceiving he can't be deceiving we can't be deceiving you can't be deceiving they can't be deceiving
Perfect	V-ing perfect
I can't have deceived you can't have deceived he can't have deceived we can't have deceived you can't have deceived they can't have deceived	I can't have been deceiving you can't have been deceiving he can't have been deceiving we can't have been deceiving you can't have been deceiving they can't have been deceiving

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I deceive? can't you deceive? can't he deceive? can't we deceive? can't you deceive? can't they deceive?	can't I be deceiving? can't you be deceiving? can't he be deceiving? can't we be deceiving? can't you be deceiving? can't they be deceiving?
Perfect	V-ing perfect
can't I have deceived? can't you have deceived? can't he have deceived? can't we have deceived? can't you have deceived? can't they have deceived?	can't I have been deceiving? can't you have been deceiving? can't he have been deceiving? can't we have been deceiving? can't you have been deceiving? can't they have been deceiving?