could uncrown
Regular verb: uncrown - uncrowned- uncrowned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could uncrown
you could uncrown
he could uncrown
we could uncrown
you could uncrown
they could uncrown 	I could be uncrowning
you could be uncrowning
he could be uncrowning
we could be uncrowning
you could be uncrowning
they could be uncrowning	I could have uncrowned
you could have uncrowned
he could have uncrowned
we could have uncrowned
you could have uncrowned
they could have uncrowned	I could have been uncrowning
you could have been uncrowning
he could have been uncrowning
we could have been uncrowning
you could have been uncrowning
they could have been uncrowning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't uncrown
you couldn't uncrown
he couldn't uncrown
we couldn't uncrown
you couldn't uncrown
they couldn't uncrown 	I couldn't be uncrowning
you couldn't be uncrowning
he couldn't be uncrowning
we couldn't be uncrowning
you couldn't be uncrowning
they couldn't be uncrowning	I couldn't have uncrowned
you couldn't have uncrowned
he couldn't have uncrowned
we couldn't have uncrowned
you couldn't have uncrowned
they couldn't have uncrowned	I couldn't have been uncrowning
you couldn't have been uncrowning
he couldn't have been uncrowning
we couldn't have been uncrowning
you couldn't have been uncrowning
they couldn't have been uncrowning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I uncrown?
could you uncrown?
could he uncrown?
could we uncrown?
could you uncrown?
could they uncrown? 	could I be uncrowning?
could you be uncrowning?
could he be uncrowning?
could we be uncrowning?
could you be uncrowning?
could they be uncrowning? 	could I have uncrowned?
could you have uncrowned?
could he have uncrowned?
could we have uncrowned?
could you have uncrowned?
could they have uncrowned? 	could I have been uncrowning?
could you have been uncrowning?
could he have been uncrowning?
could we have been uncrowning?
could you have been uncrowning?
could they have been uncrowning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I uncrown?
couldn't you uncrown?
couldn't he uncrown?
couldn't we uncrown?
couldn't you uncrown?
couldn't they uncrown? 	couldn't I be uncrowning?
couldn't you be uncrowning?
couldn't he be uncrowning?
couldn't we be uncrowning?
couldn't you be uncrowning?
couldn't they be uncrowning? 	couldn't I have uncrowned?
couldn't you have uncrowned?
couldn't he have uncrowned?
couldn't we have uncrowned?
couldn't you have uncrowned?
couldn't they have uncrowned? 	couldn't I have been uncrowning?
couldn't you have been uncrowning?
couldn't he have been uncrowning?
couldn't we have been uncrowning?
couldn't you have been uncrowning?
couldn't they have been uncrowning?