could query
Regular verb: query - queried- queried

Affirmation 	
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I could query
you could query
he could query
we could query
you could query
they could query 	I could be querying
you could be querying
he could be querying
we could be querying
you could be querying
they could be querying	I could have queried
you could have queried
he could have queried
we could have queried
you could have queried
they could have queried	I could have been querying
you could have been querying
he could have been querying
we could have been querying
you could have been querying
they could have been querying	

Negation 	
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I couldn't query
you couldn't query
he couldn't query
we couldn't query
you couldn't query
they couldn't query 	I couldn't be querying
you couldn't be querying
he couldn't be querying
we couldn't be querying
you couldn't be querying
they couldn't be querying	I couldn't have queried
you couldn't have queried
he couldn't have queried
we couldn't have queried
you couldn't have queried
they couldn't have queried	I couldn't have been querying
you couldn't have been querying
he couldn't have been querying
we couldn't have been querying
you couldn't have been querying
they couldn't have been querying	

Interrogative form 	
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could I query?
could you query?
could he query?
could we query?
could you query?
could they query? 	could I be querying?
could you be querying?
could he be querying?
could we be querying?
could you be querying?
could they be querying? 	could I have queried?
could you have queried?
could he have queried?
could we have queried?
could you have queried?
could they have queried? 	could I have been querying?
could you have been querying?
could he have been querying?
could we have been querying?
could you have been querying?
could they have been querying? 	

Interro-negative form 	
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couldn't I query?
couldn't you query?
couldn't he query?
couldn't we query?
couldn't you query?
couldn't they query? 	couldn't I be querying?
couldn't you be querying?
couldn't he be querying?
couldn't we be querying?
couldn't you be querying?
couldn't they be querying? 	couldn't I have queried?
couldn't you have queried?
couldn't he have queried?
couldn't we have queried?
couldn't you have queried?
couldn't they have queried? 	couldn't I have been querying?
couldn't you have been querying?
couldn't he have been querying?
couldn't we have been querying?
couldn't you have been querying?
couldn't they have been querying?