English verb conjugation
COULD PREFOCUS

Regular verb: prefocus - prefocused - prefocused

Affirmation

Simple form	V-ing form
I could prefocus you could prefocus she could prefocus we could prefocus you could prefocus they could prefocus	I could be prefocusing you could be prefocusing she could be prefocusing we could be prefocusing you could be prefocusing they could be prefocusing
Perfect	V-ing perfect
I could have prefocused you could have prefocused she could have prefocused we could have prefocused you could have prefocused they could have prefocused	I could have been prefocusing you could have been prefocusing she could have been prefocusing we could have been prefocusing you could have been prefocusing they could have been prefocusing

Negation

Simple form	V-ing form
I couldn't prefocus you couldn't prefocus she couldn't prefocus we couldn't prefocus you couldn't prefocus they couldn't prefocus	I couldn't be prefocusing you couldn't be prefocusing she couldn't be prefocusing we couldn't be prefocusing you couldn't be prefocusing they couldn't be prefocusing
Perfect	V-ing perfect
I couldn't have prefocused you couldn't have prefocused she couldn't have prefocused we couldn't have prefocused you couldn't have prefocused they couldn't have prefocused	I couldn't have been prefocusing you couldn't have been prefocusing she couldn't have been prefocusing we couldn't have been prefocusing you couldn't have been prefocusing they couldn't have been prefocusing

Interrogative form

Simple form	V-ing form
could I prefocus? could you prefocus? could she prefocus? could we prefocus? could you prefocus? could they prefocus?	could I be prefocusing? could you be prefocusing? could she be prefocusing? could we be prefocusing? could you be prefocusing? could they be prefocusing?
Perfect	V-ing perfect
could I have prefocused? could you have prefocused? could she have prefocused? could we have prefocused? could you have prefocused? could they have prefocused?	could I have been prefocusing? could you have been prefocusing? could she have been prefocusing? could we have been prefocusing? could you have been prefocusing? could they have been prefocusing?

Interro-negative form

Simple form	V-ing form
couldn't I prefocus? couldn't you prefocus? couldn't she prefocus? couldn't we prefocus? couldn't you prefocus? couldn't they prefocus?	couldn't I be prefocusing? couldn't you be prefocusing? couldn't she be prefocusing? couldn't we be prefocusing? couldn't you be prefocusing? couldn't they be prefocusing?
Perfect	V-ing perfect
couldn't I have prefocused? couldn't you have prefocused? couldn't she have prefocused? couldn't we have prefocused? couldn't you have prefocused? couldn't they have prefocused?	couldn't I have been prefocusing? couldn't you have been prefocusing? couldn't she have been prefocusing? couldn't we have been prefocusing? couldn't you have been prefocusing? couldn't they have been prefocusing?