could struggle
Regular verb: struggle - struggled- struggled

Affirmation 	
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I could struggle
you could struggle
she could struggle
we could struggle
you could struggle
they could struggle 	I could be struggling
you could be struggling
she could be struggling
we could be struggling
you could be struggling
they could be struggling	I could have struggled
you could have struggled
she could have struggled
we could have struggled
you could have struggled
they could have struggled	I could have been struggling
you could have been struggling
she could have been struggling
we could have been struggling
you could have been struggling
they could have been struggling	

Negation 	
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I couldn't struggle
you couldn't struggle
she couldn't struggle
we couldn't struggle
you couldn't struggle
they couldn't struggle 	I couldn't be struggling
you couldn't be struggling
she couldn't be struggling
we couldn't be struggling
you couldn't be struggling
they couldn't be struggling	I couldn't have struggled
you couldn't have struggled
she couldn't have struggled
we couldn't have struggled
you couldn't have struggled
they couldn't have struggled	I couldn't have been struggling
you couldn't have been struggling
she couldn't have been struggling
we couldn't have been struggling
you couldn't have been struggling
they couldn't have been struggling	

Interrogative form 	
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could I struggle?
could you struggle?
could she struggle?
could we struggle?
could you struggle?
could they struggle? 	could I be struggling?
could you be struggling?
could she be struggling?
could we be struggling?
could you be struggling?
could they be struggling? 	could I have struggled?
could you have struggled?
could she have struggled?
could we have struggled?
could you have struggled?
could they have struggled? 	could I have been struggling?
could you have been struggling?
could she have been struggling?
could we have been struggling?
could you have been struggling?
could they have been struggling? 	

Interro-negative form 	
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couldn't I struggle?
couldn't you struggle?
couldn't she struggle?
couldn't we struggle?
couldn't you struggle?
couldn't they struggle? 	couldn't I be struggling?
couldn't you be struggling?
couldn't she be struggling?
couldn't we be struggling?
couldn't you be struggling?
couldn't they be struggling? 	couldn't I have struggled?
couldn't you have struggled?
couldn't she have struggled?
couldn't we have struggled?
couldn't you have struggled?
couldn't they have struggled? 	couldn't I have been struggling?
couldn't you have been struggling?
couldn't she have been struggling?
couldn't we have been struggling?
couldn't you have been struggling?
couldn't they have been struggling?