could miscarry
Regular verb: miscarry - miscarried- miscarried

Affirmation 	
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I could miscarry
you could miscarry
she could miscarry
we could miscarry
you could miscarry
they could miscarry 	I could be miscarrying
you could be miscarrying
she could be miscarrying
we could be miscarrying
you could be miscarrying
they could be miscarrying	I could have miscarried
you could have miscarried
she could have miscarried
we could have miscarried
you could have miscarried
they could have miscarried	I could have been miscarrying
you could have been miscarrying
she could have been miscarrying
we could have been miscarrying
you could have been miscarrying
they could have been miscarrying	

Negation 	
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I couldn't miscarry
you couldn't miscarry
she couldn't miscarry
we couldn't miscarry
you couldn't miscarry
they couldn't miscarry 	I couldn't be miscarrying
you couldn't be miscarrying
she couldn't be miscarrying
we couldn't be miscarrying
you couldn't be miscarrying
they couldn't be miscarrying	I couldn't have miscarried
you couldn't have miscarried
she couldn't have miscarried
we couldn't have miscarried
you couldn't have miscarried
they couldn't have miscarried	I couldn't have been miscarrying
you couldn't have been miscarrying
she couldn't have been miscarrying
we couldn't have been miscarrying
you couldn't have been miscarrying
they couldn't have been miscarrying	

Interrogative form 	
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could I miscarry?
could you miscarry?
could she miscarry?
could we miscarry?
could you miscarry?
could they miscarry? 	could I be miscarrying?
could you be miscarrying?
could she be miscarrying?
could we be miscarrying?
could you be miscarrying?
could they be miscarrying? 	could I have miscarried?
could you have miscarried?
could she have miscarried?
could we have miscarried?
could you have miscarried?
could they have miscarried? 	could I have been miscarrying?
could you have been miscarrying?
could she have been miscarrying?
could we have been miscarrying?
could you have been miscarrying?
could they have been miscarrying? 	

Interro-negative form 	
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couldn't I miscarry?
couldn't you miscarry?
couldn't she miscarry?
couldn't we miscarry?
couldn't you miscarry?
couldn't they miscarry? 	couldn't I be miscarrying?
couldn't you be miscarrying?
couldn't she be miscarrying?
couldn't we be miscarrying?
couldn't you be miscarrying?
couldn't they be miscarrying? 	couldn't I have miscarried?
couldn't you have miscarried?
couldn't she have miscarried?
couldn't we have miscarried?
couldn't you have miscarried?
couldn't they have miscarried? 	couldn't I have been miscarrying?
couldn't you have been miscarrying?
couldn't she have been miscarrying?
couldn't we have been miscarrying?
couldn't you have been miscarrying?
couldn't they have been miscarrying?