English verb conjugation
COULD SURPLUS

Regular verb: surplus - surplused - surplused

Affirmation

Simple form	V-ing form
I could surplus you could surplus he could surplus we could surplus you could surplus they could surplus	I could be surplusing you could be surplusing he could be surplusing we could be surplusing you could be surplusing they could be surplusing
Perfect	V-ing perfect
I could have surplused you could have surplused he could have surplused we could have surplused you could have surplused they could have surplused	I could have been surplusing you could have been surplusing he could have been surplusing we could have been surplusing you could have been surplusing they could have been surplusing

Negation

Simple form	V-ing form
I couldn't surplus you couldn't surplus he couldn't surplus we couldn't surplus you couldn't surplus they couldn't surplus	I couldn't be surplusing you couldn't be surplusing he couldn't be surplusing we couldn't be surplusing you couldn't be surplusing they couldn't be surplusing
Perfect	V-ing perfect
I couldn't have surplused you couldn't have surplused he couldn't have surplused we couldn't have surplused you couldn't have surplused they couldn't have surplused	I couldn't have been surplusing you couldn't have been surplusing he couldn't have been surplusing we couldn't have been surplusing you couldn't have been surplusing they couldn't have been surplusing

Interrogative form

Simple form	V-ing form
could I surplus? could you surplus? could he surplus? could we surplus? could you surplus? could they surplus?	could I be surplusing? could you be surplusing? could he be surplusing? could we be surplusing? could you be surplusing? could they be surplusing?
Perfect	V-ing perfect
could I have surplused? could you have surplused? could he have surplused? could we have surplused? could you have surplused? could they have surplused?	could I have been surplusing? could you have been surplusing? could he have been surplusing? could we have been surplusing? could you have been surplusing? could they have been surplusing?

Interro-negative form

Simple form	V-ing form
couldn't I surplus? couldn't you surplus? couldn't he surplus? couldn't we surplus? couldn't you surplus? couldn't they surplus?	couldn't I be surplusing? couldn't you be surplusing? couldn't he be surplusing? couldn't we be surplusing? couldn't you be surplusing? couldn't they be surplusing?
Perfect	V-ing perfect
couldn't I have surplused? couldn't you have surplused? couldn't he have surplused? couldn't we have surplused? couldn't you have surplused? couldn't they have surplused?	couldn't I have been surplusing? couldn't you have been surplusing? couldn't he have been surplusing? couldn't we have been surplusing? couldn't you have been surplusing? couldn't they have been surplusing?