English verb conjugation
COULD ARREST

Regular verb: arrest - arrested - arrested

Affirmation

Simple form	V-ing form
I could arrest you could arrest he could arrest we could arrest you could arrest they could arrest	I could be arresting you could be arresting he could be arresting we could be arresting you could be arresting they could be arresting
Perfect	V-ing perfect
I could have arrested you could have arrested he could have arrested we could have arrested you could have arrested they could have arrested	I could have been arresting you could have been arresting he could have been arresting we could have been arresting you could have been arresting they could have been arresting

Negation

Simple form	V-ing form
I couldn't arrest you couldn't arrest he couldn't arrest we couldn't arrest you couldn't arrest they couldn't arrest	I couldn't be arresting you couldn't be arresting he couldn't be arresting we couldn't be arresting you couldn't be arresting they couldn't be arresting
Perfect	V-ing perfect
I couldn't have arrested you couldn't have arrested he couldn't have arrested we couldn't have arrested you couldn't have arrested they couldn't have arrested	I couldn't have been arresting you couldn't have been arresting he couldn't have been arresting we couldn't have been arresting you couldn't have been arresting they couldn't have been arresting

Interrogative form

Simple form	V-ing form
could I arrest? could you arrest? could he arrest? could we arrest? could you arrest? could they arrest?	could I be arresting? could you be arresting? could he be arresting? could we be arresting? could you be arresting? could they be arresting?
Perfect	V-ing perfect
could I have arrested? could you have arrested? could he have arrested? could we have arrested? could you have arrested? could they have arrested?	could I have been arresting? could you have been arresting? could he have been arresting? could we have been arresting? could you have been arresting? could they have been arresting?

Interro-negative form

Simple form	V-ing form
couldn't I arrest? couldn't you arrest? couldn't he arrest? couldn't we arrest? couldn't you arrest? couldn't they arrest?	couldn't I be arresting? couldn't you be arresting? couldn't he be arresting? couldn't we be arresting? couldn't you be arresting? couldn't they be arresting?
Perfect	V-ing perfect
couldn't I have arrested? couldn't you have arrested? couldn't he have arrested? couldn't we have arrested? couldn't you have arrested? couldn't they have arrested?	couldn't I have been arresting? couldn't you have been arresting? couldn't he have been arresting? couldn't we have been arresting? couldn't you have been arresting? couldn't they have been arresting?