English verb conjugation
COULD DEPRECIATE

Regular verb: depreciate - depreciated - depreciated

Affirmation

Simple form	V-ing form
I could depreciate you could depreciate he could depreciate we could depreciate you could depreciate they could depreciate	I could be depreciating you could be depreciating he could be depreciating we could be depreciating you could be depreciating they could be depreciating
Perfect	V-ing perfect
I could have depreciated you could have depreciated he could have depreciated we could have depreciated you could have depreciated they could have depreciated	I could have been depreciating you could have been depreciating he could have been depreciating we could have been depreciating you could have been depreciating they could have been depreciating

Negation

Simple form	V-ing form
I couldn't depreciate you couldn't depreciate he couldn't depreciate we couldn't depreciate you couldn't depreciate they couldn't depreciate	I couldn't be depreciating you couldn't be depreciating he couldn't be depreciating we couldn't be depreciating you couldn't be depreciating they couldn't be depreciating
Perfect	V-ing perfect
I couldn't have depreciated you couldn't have depreciated he couldn't have depreciated we couldn't have depreciated you couldn't have depreciated they couldn't have depreciated	I couldn't have been depreciating you couldn't have been depreciating he couldn't have been depreciating we couldn't have been depreciating you couldn't have been depreciating they couldn't have been depreciating

Interrogative form

Simple form	V-ing form
could I depreciate? could you depreciate? could he depreciate? could we depreciate? could you depreciate? could they depreciate?	could I be depreciating? could you be depreciating? could he be depreciating? could we be depreciating? could you be depreciating? could they be depreciating?
Perfect	V-ing perfect
could I have depreciated? could you have depreciated? could he have depreciated? could we have depreciated? could you have depreciated? could they have depreciated?	could I have been depreciating? could you have been depreciating? could he have been depreciating? could we have been depreciating? could you have been depreciating? could they have been depreciating?

Interro-negative form

Simple form	V-ing form
couldn't I depreciate? couldn't you depreciate? couldn't he depreciate? couldn't we depreciate? couldn't you depreciate? couldn't they depreciate?	couldn't I be depreciating? couldn't you be depreciating? couldn't he be depreciating? couldn't we be depreciating? couldn't you be depreciating? couldn't they be depreciating?
Perfect	V-ing perfect
couldn't I have depreciated? couldn't you have depreciated? couldn't he have depreciated? couldn't we have depreciated? couldn't you have depreciated? couldn't they have depreciated?	couldn't I have been depreciating? couldn't you have been depreciating? couldn't he have been depreciating? couldn't we have been depreciating? couldn't you have been depreciating? couldn't they have been depreciating?