could smear
Regular verb: smear - smeared- smeared

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could smear
you could smear
she could smear
we could smear
you could smear
they could smear 	I could be smearing
you could be smearing
she could be smearing
we could be smearing
you could be smearing
they could be smearing	I could have smeared
you could have smeared
she could have smeared
we could have smeared
you could have smeared
they could have smeared	I could have been smearing
you could have been smearing
she could have been smearing
we could have been smearing
you could have been smearing
they could have been smearing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't smear
you couldn't smear
she couldn't smear
we couldn't smear
you couldn't smear
they couldn't smear 	I couldn't be smearing
you couldn't be smearing
she couldn't be smearing
we couldn't be smearing
you couldn't be smearing
they couldn't be smearing	I couldn't have smeared
you couldn't have smeared
she couldn't have smeared
we couldn't have smeared
you couldn't have smeared
they couldn't have smeared	I couldn't have been smearing
you couldn't have been smearing
she couldn't have been smearing
we couldn't have been smearing
you couldn't have been smearing
they couldn't have been smearing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I smear?
could you smear?
could she smear?
could we smear?
could you smear?
could they smear? 	could I be smearing?
could you be smearing?
could she be smearing?
could we be smearing?
could you be smearing?
could they be smearing? 	could I have smeared?
could you have smeared?
could she have smeared?
could we have smeared?
could you have smeared?
could they have smeared? 	could I have been smearing?
could you have been smearing?
could she have been smearing?
could we have been smearing?
could you have been smearing?
could they have been smearing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I smear?
couldn't you smear?
couldn't she smear?
couldn't we smear?
couldn't you smear?
couldn't they smear? 	couldn't I be smearing?
couldn't you be smearing?
couldn't she be smearing?
couldn't we be smearing?
couldn't you be smearing?
couldn't they be smearing? 	couldn't I have smeared?
couldn't you have smeared?
couldn't she have smeared?
couldn't we have smeared?
couldn't you have smeared?
couldn't they have smeared? 	couldn't I have been smearing?
couldn't you have been smearing?
couldn't she have been smearing?
couldn't we have been smearing?
couldn't you have been smearing?
couldn't they have been smearing?