could occlude
Regular verb: occlude - occluded- occluded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could occlude
you could occlude
she could occlude
we could occlude
you could occlude
they could occlude 	I could be occluding
you could be occluding
she could be occluding
we could be occluding
you could be occluding
they could be occluding	I could have occluded
you could have occluded
she could have occluded
we could have occluded
you could have occluded
they could have occluded	I could have been occluding
you could have been occluding
she could have been occluding
we could have been occluding
you could have been occluding
they could have been occluding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't occlude
you couldn't occlude
she couldn't occlude
we couldn't occlude
you couldn't occlude
they couldn't occlude 	I couldn't be occluding
you couldn't be occluding
she couldn't be occluding
we couldn't be occluding
you couldn't be occluding
they couldn't be occluding	I couldn't have occluded
you couldn't have occluded
she couldn't have occluded
we couldn't have occluded
you couldn't have occluded
they couldn't have occluded	I couldn't have been occluding
you couldn't have been occluding
she couldn't have been occluding
we couldn't have been occluding
you couldn't have been occluding
they couldn't have been occluding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I occlude?
could you occlude?
could she occlude?
could we occlude?
could you occlude?
could they occlude? 	could I be occluding?
could you be occluding?
could she be occluding?
could we be occluding?
could you be occluding?
could they be occluding? 	could I have occluded?
could you have occluded?
could she have occluded?
could we have occluded?
could you have occluded?
could they have occluded? 	could I have been occluding?
could you have been occluding?
could she have been occluding?
could we have been occluding?
could you have been occluding?
could they have been occluding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I occlude?
couldn't you occlude?
couldn't she occlude?
couldn't we occlude?
couldn't you occlude?
couldn't they occlude? 	couldn't I be occluding?
couldn't you be occluding?
couldn't she be occluding?
couldn't we be occluding?
couldn't you be occluding?
couldn't they be occluding? 	couldn't I have occluded?
couldn't you have occluded?
couldn't she have occluded?
couldn't we have occluded?
couldn't you have occluded?
couldn't they have occluded? 	couldn't I have been occluding?
couldn't you have been occluding?
couldn't she have been occluding?
couldn't we have been occluding?
couldn't you have been occluding?
couldn't they have been occluding?