English verb conjugation
COULD UNDERPRICE

Regular verb: underprice - underpriced - underpriced

Affirmation

Simple form	V-ing form
I could underprice you could underprice he could underprice we could underprice you could underprice they could underprice	I could be underpricing you could be underpricing he could be underpricing we could be underpricing you could be underpricing they could be underpricing
Perfect	V-ing perfect
I could have underpriced you could have underpriced he could have underpriced we could have underpriced you could have underpriced they could have underpriced	I could have been underpricing you could have been underpricing he could have been underpricing we could have been underpricing you could have been underpricing they could have been underpricing

Negation

Simple form	V-ing form
I couldn't underprice you couldn't underprice he couldn't underprice we couldn't underprice you couldn't underprice they couldn't underprice	I couldn't be underpricing you couldn't be underpricing he couldn't be underpricing we couldn't be underpricing you couldn't be underpricing they couldn't be underpricing
Perfect	V-ing perfect
I couldn't have underpriced you couldn't have underpriced he couldn't have underpriced we couldn't have underpriced you couldn't have underpriced they couldn't have underpriced	I couldn't have been underpricing you couldn't have been underpricing he couldn't have been underpricing we couldn't have been underpricing you couldn't have been underpricing they couldn't have been underpricing

Interrogative form

Simple form	V-ing form
could I underprice? could you underprice? could he underprice? could we underprice? could you underprice? could they underprice?	could I be underpricing? could you be underpricing? could he be underpricing? could we be underpricing? could you be underpricing? could they be underpricing?
Perfect	V-ing perfect
could I have underpriced? could you have underpriced? could he have underpriced? could we have underpriced? could you have underpriced? could they have underpriced?	could I have been underpricing? could you have been underpricing? could he have been underpricing? could we have been underpricing? could you have been underpricing? could they have been underpricing?

Interro-negative form

Simple form	V-ing form
couldn't I underprice? couldn't you underprice? couldn't he underprice? couldn't we underprice? couldn't you underprice? couldn't they underprice?	couldn't I be underpricing? couldn't you be underpricing? couldn't he be underpricing? couldn't we be underpricing? couldn't you be underpricing? couldn't they be underpricing?
Perfect	V-ing perfect
couldn't I have underpriced? couldn't you have underpriced? couldn't he have underpriced? couldn't we have underpriced? couldn't you have underpriced? couldn't they have underpriced?	couldn't I have been underpricing? couldn't you have been underpricing? couldn't he have been underpricing? couldn't we have been underpricing? couldn't you have been underpricing? couldn't they have been underpricing?