could undrape
Regular verb: undrape - undraped- undraped

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