English verb conjugation
CAN FESTOON

Regular verb: festoon - festooned - festooned

Affirmation

Simple form	V-ing form
I can festoon you can festoon he can festoon we can festoon you can festoon they can festoon	I can be festooning you can be festooning he can be festooning we can be festooning you can be festooning they can be festooning
Perfect	V-ing perfect
I can have festooned you can have festooned he can have festooned we can have festooned you can have festooned they can have festooned	I can have been festooning you can have been festooning he can have been festooning we can have been festooning you can have been festooning they can have been festooning

Negation

Simple form	V-ing form
I cannot festoon you cannot festoon he cannot festoon we cannot festoon you cannot festoon they cannot festoon	I cannot be festooning you cannot be festooning he cannot be festooning we cannot be festooning you cannot be festooning they cannot be festooning
Perfect	V-ing perfect
I cannot have festooned you cannot have festooned he cannot have festooned we cannot have festooned you cannot have festooned they cannot have festooned	I cannot have been festooning you cannot have been festooning he cannot have been festooning we cannot have been festooning you cannot have been festooning they cannot have been festooning

Interrogative form

Simple form	V-ing form
can I festoon? can you festoon? can he festoon? can we festoon? can you festoon? can they festoon?	can I be festooning? can you be festooning? can he be festooning? can we be festooning? can you be festooning? can they be festooning?
Perfect	V-ing perfect
can I have festooned? can you have festooned? can he have festooned? can we have festooned? can you have festooned? can they have festooned?	can I have been festooning? can you have been festooning? can he have been festooning? can we have been festooning? can you have been festooning? can they have been festooning?

Interro-negative form

Simple form	V-ing form
can I not festoon? can you not festoon? can he not festoon? can we not festoon? can you not festoon? can they not festoon?	can I not be festooning? can you not be festooning? can he not be festooning? can we not be festooning? can you not be festooning? can they not be festooning?
Perfect	V-ing perfect
can I not have festooned? can you not have festooned? can he not have festooned? can we not have festooned? can you not have festooned? can they not have festooned?	can I not have been festooning? can you not have been festooning? can he not have been festooning? can we not have been festooning? can you not have been festooning? can they not have been festooning?