English verb conjugation
COULD UNDRAPE

Regular verb: undrape - undraped - undraped

Affirmation

Simple form	V-ing form
I could undrape you could undrape she could undrape we could undrape you could undrape they could undrape	I could be undraping you could be undraping she could be undraping we could be undraping you could be undraping they could be undraping
Perfect	V-ing perfect
I could have undraped you could have undraped she could have undraped we could have undraped you could have undraped they could have undraped	I could have been undraping you could have been undraping she could have been undraping we could have been undraping you could have been undraping they could have been undraping

Negation

Simple form	V-ing form
I couldn't undrape you couldn't undrape she couldn't undrape we couldn't undrape you couldn't undrape they couldn't undrape	I couldn't be undraping you couldn't be undraping she couldn't be undraping we couldn't be undraping you couldn't be undraping they couldn't be undraping
Perfect	V-ing perfect
I couldn't have undraped you couldn't have undraped she couldn't have undraped we couldn't have undraped you couldn't have undraped they couldn't have undraped	I couldn't have been undraping you couldn't have been undraping she couldn't have been undraping we couldn't have been undraping you couldn't have been undraping they couldn't have been undraping

Interrogative form

Simple form	V-ing form
could I undrape? could you undrape? could she undrape? could we undrape? could you undrape? could they undrape?	could I be undraping? could you be undraping? could she be undraping? could we be undraping? could you be undraping? could they be undraping?
Perfect	V-ing perfect
could I have undraped? could you have undraped? could she have undraped? could we have undraped? could you have undraped? could they have undraped?	could I have been undraping? could you have been undraping? could she have been undraping? could we have been undraping? could you have been undraping? could they have been undraping?

Interro-negative form

Simple form	V-ing form
couldn't I undrape? couldn't you undrape? couldn't she undrape? couldn't we undrape? couldn't you undrape? couldn't they undrape?	couldn't I be undraping? couldn't you be undraping? couldn't she be undraping? couldn't we be undraping? couldn't you be undraping? couldn't they be undraping?
Perfect	V-ing perfect
couldn't I have undraped? couldn't you have undraped? couldn't she have undraped? couldn't we have undraped? couldn't you have undraped? couldn't they have undraped?	couldn't I have been undraping? couldn't you have been undraping? couldn't she have been undraping? couldn't we have been undraping? couldn't you have been undraping? couldn't they have been undraping?