English verb conjugation
COULD CIRCUMVALLATE

Regular verb: circumvallate - circumvallated - circumvallated

Affirmation

Simple form	V-ing form
I could circumvallate you could circumvallate he could circumvallate we could circumvallate you could circumvallate they could circumvallate	I could be circumvallating you could be circumvallating he could be circumvallating we could be circumvallating you could be circumvallating they could be circumvallating
Perfect	V-ing perfect
I could have circumvallated you could have circumvallated he could have circumvallated we could have circumvallated you could have circumvallated they could have circumvallated	I could have been circumvallating you could have been circumvallating he could have been circumvallating we could have been circumvallating you could have been circumvallating they could have been circumvallating

Negation

Simple form	V-ing form
I couldn't circumvallate you couldn't circumvallate he couldn't circumvallate we couldn't circumvallate you couldn't circumvallate they couldn't circumvallate	I couldn't be circumvallating you couldn't be circumvallating he couldn't be circumvallating we couldn't be circumvallating you couldn't be circumvallating they couldn't be circumvallating
Perfect	V-ing perfect
I couldn't have circumvallated you couldn't have circumvallated he couldn't have circumvallated we couldn't have circumvallated you couldn't have circumvallated they couldn't have circumvallated	I couldn't have been circumvallating you couldn't have been circumvallating he couldn't have been circumvallating we couldn't have been circumvallating you couldn't have been circumvallating they couldn't have been circumvallating

Interrogative form

Simple form	V-ing form
could I circumvallate? could you circumvallate? could he circumvallate? could we circumvallate? could you circumvallate? could they circumvallate?	could I be circumvallating? could you be circumvallating? could he be circumvallating? could we be circumvallating? could you be circumvallating? could they be circumvallating?
Perfect	V-ing perfect
could I have circumvallated? could you have circumvallated? could he have circumvallated? could we have circumvallated? could you have circumvallated? could they have circumvallated?	could I have been circumvallating? could you have been circumvallating? could he have been circumvallating? could we have been circumvallating? could you have been circumvallating? could they have been circumvallating?

Interro-negative form

Simple form	V-ing form
couldn't I circumvallate? couldn't you circumvallate? couldn't he circumvallate? couldn't we circumvallate? couldn't you circumvallate? couldn't they circumvallate?	couldn't I be circumvallating? couldn't you be circumvallating? couldn't he be circumvallating? couldn't we be circumvallating? couldn't you be circumvallating? couldn't they be circumvallating?
Perfect	V-ing perfect
couldn't I have circumvallated? couldn't you have circumvallated? couldn't he have circumvallated? couldn't we have circumvallated? couldn't you have circumvallated? couldn't they have circumvallated?	couldn't I have been circumvallating? couldn't you have been circumvallating? couldn't he have been circumvallating? couldn't we have been circumvallating? couldn't you have been circumvallating? couldn't they have been circumvallating?