English verb conjugation
CAN BARRICADE

Regular verb: barricade - barricaded - barricaded

Affirmation

Simple form	V-ing form
I can barricade you can barricade he can barricade we can barricade you can barricade they can barricade	I can be barricading you can be barricading he can be barricading we can be barricading you can be barricading they can be barricading
Perfect	V-ing perfect
I can have barricaded you can have barricaded he can have barricaded we can have barricaded you can have barricaded they can have barricaded	I can have been barricading you can have been barricading he can have been barricading we can have been barricading you can have been barricading they can have been barricading

Negation

Simple form	V-ing form
I can't barricade you can't barricade he can't barricade we can't barricade you can't barricade they can't barricade	I can't be barricading you can't be barricading he can't be barricading we can't be barricading you can't be barricading they can't be barricading
Perfect	V-ing perfect
I can't have barricaded you can't have barricaded he can't have barricaded we can't have barricaded you can't have barricaded they can't have barricaded	I can't have been barricading you can't have been barricading he can't have been barricading we can't have been barricading you can't have been barricading they can't have been barricading

Interrogative form

Simple form	V-ing form
can I barricade? can you barricade? can he barricade? can we barricade? can you barricade? can they barricade?	can I be barricading? can you be barricading? can he be barricading? can we be barricading? can you be barricading? can they be barricading?
Perfect	V-ing perfect
can I have barricaded? can you have barricaded? can he have barricaded? can we have barricaded? can you have barricaded? can they have barricaded?	can I have been barricading? can you have been barricading? can he have been barricading? can we have been barricading? can you have been barricading? can they have been barricading?

Interro-negative form

Simple form	V-ing form
can't I barricade? can't you barricade? can't he barricade? can't we barricade? can't you barricade? can't they barricade?	can't I be barricading? can't you be barricading? can't he be barricading? can't we be barricading? can't you be barricading? can't they be barricading?
Perfect	V-ing perfect
can't I have barricaded? can't you have barricaded? can't he have barricaded? can't we have barricaded? can't you have barricaded? can't they have barricaded?	can't I have been barricading? can't you have been barricading? can't he have been barricading? can't we have been barricading? can't you have been barricading? can't they have been barricading?