could cane
Regular verb: cane - caned- caned

Affirmation 	
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I could cane
you could cane
he could cane
we could cane
you could cane
they could cane 	I could be caning
you could be caning
he could be caning
we could be caning
you could be caning
they could be caning	I could have caned
you could have caned
he could have caned
we could have caned
you could have caned
they could have caned	I could have been caning
you could have been caning
he could have been caning
we could have been caning
you could have been caning
they could have been caning	

Negation 	
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I couldn't cane
you couldn't cane
he couldn't cane
we couldn't cane
you couldn't cane
they couldn't cane 	I couldn't be caning
you couldn't be caning
he couldn't be caning
we couldn't be caning
you couldn't be caning
they couldn't be caning	I couldn't have caned
you couldn't have caned
he couldn't have caned
we couldn't have caned
you couldn't have caned
they couldn't have caned	I couldn't have been caning
you couldn't have been caning
he couldn't have been caning
we couldn't have been caning
you couldn't have been caning
they couldn't have been caning	

Interrogative form 	
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could I cane?
could you cane?
could he cane?
could we cane?
could you cane?
could they cane? 	could I be caning?
could you be caning?
could he be caning?
could we be caning?
could you be caning?
could they be caning? 	could I have caned?
could you have caned?
could he have caned?
could we have caned?
could you have caned?
could they have caned? 	could I have been caning?
could you have been caning?
could he have been caning?
could we have been caning?
could you have been caning?
could they have been caning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cane?
couldn't you cane?
couldn't he cane?
couldn't we cane?
couldn't you cane?
couldn't they cane? 	couldn't I be caning?
couldn't you be caning?
couldn't he be caning?
couldn't we be caning?
couldn't you be caning?
couldn't they be caning? 	couldn't I have caned?
couldn't you have caned?
couldn't he have caned?
couldn't we have caned?
couldn't you have caned?
couldn't they have caned? 	couldn't I have been caning?
couldn't you have been caning?
couldn't he have been caning?
couldn't we have been caning?
couldn't you have been caning?
couldn't they have been caning?