could struggle
Verbo regular: struggle - struggled- struggled

Afirmación 	
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I could struggle
you could struggle
he could struggle
we could struggle
you could struggle
they could struggle 	I could be struggling
you could be struggling
he could be struggling
we could be struggling
you could be struggling
they could be struggling	I could have struggled
you could have struggled
he 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
he could have been struggling
we could have been struggling
you could have been struggling
they could have been struggling	

Negación 	
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I couldn't struggle
you couldn't struggle
he 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
he 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
he 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
he couldn't have been struggling
we couldn't have been struggling
you couldn't have been struggling
they couldn't have been struggling	

Forma interrogativa 	
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could I struggle?
could you struggle?
could he struggle?
could we struggle?
could you struggle?
could they struggle? 	could I be struggling?
could you be struggling?
could he be struggling?
could we be struggling?
could you be struggling?
could they be struggling? 	could I have struggled?
could you have struggled?
could he 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 he have been struggling?
could we have been struggling?
could you have been struggling?
could they have been struggling? 	

Forma interro-negativa 	
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couldn't I struggle?
couldn't you struggle?
couldn't he 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 he 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 he 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 he have been struggling?
couldn't we have been struggling?
couldn't you have been struggling?
couldn't they have been struggling?