could slaughter
Regular verb: slaughter - slaughtered- slaughtered

Affirmation 	
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I could slaughter
you could slaughter
he could slaughter
we could slaughter
you could slaughter
they could slaughter 	I could be slaughtering
you could be slaughtering
he could be slaughtering
we could be slaughtering
you could be slaughtering
they could be slaughtering	I could have slaughtered
you could have slaughtered
he could have slaughtered
we could have slaughtered
you could have slaughtered
they could have slaughtered	I could have been slaughtering
you could have been slaughtering
he could have been slaughtering
we could have been slaughtering
you could have been slaughtering
they could have been slaughtering	

Negation 	
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I couldn't slaughter
you couldn't slaughter
he couldn't slaughter
we couldn't slaughter
you couldn't slaughter
they couldn't slaughter 	I couldn't be slaughtering
you couldn't be slaughtering
he couldn't be slaughtering
we couldn't be slaughtering
you couldn't be slaughtering
they couldn't be slaughtering	I couldn't have slaughtered
you couldn't have slaughtered
he couldn't have slaughtered
we couldn't have slaughtered
you couldn't have slaughtered
they couldn't have slaughtered	I couldn't have been slaughtering
you couldn't have been slaughtering
he couldn't have been slaughtering
we couldn't have been slaughtering
you couldn't have been slaughtering
they couldn't have been slaughtering	

Interrogative form 	
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could I slaughter?
could you slaughter?
could he slaughter?
could we slaughter?
could you slaughter?
could they slaughter? 	could I be slaughtering?
could you be slaughtering?
could he be slaughtering?
could we be slaughtering?
could you be slaughtering?
could they be slaughtering? 	could I have slaughtered?
could you have slaughtered?
could he have slaughtered?
could we have slaughtered?
could you have slaughtered?
could they have slaughtered? 	could I have been slaughtering?
could you have been slaughtering?
could he have been slaughtering?
could we have been slaughtering?
could you have been slaughtering?
could they have been slaughtering? 	

Interro-negative form 	
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couldn't I slaughter?
couldn't you slaughter?
couldn't he slaughter?
couldn't we slaughter?
couldn't you slaughter?
couldn't they slaughter? 	couldn't I be slaughtering?
couldn't you be slaughtering?
couldn't he be slaughtering?
couldn't we be slaughtering?
couldn't you be slaughtering?
couldn't they be slaughtering? 	couldn't I have slaughtered?
couldn't you have slaughtered?
couldn't he have slaughtered?
couldn't we have slaughtered?
couldn't you have slaughtered?
couldn't they have slaughtered? 	couldn't I have been slaughtering?
couldn't you have been slaughtering?
couldn't he have been slaughtering?
couldn't we have been slaughtering?
couldn't you have been slaughtering?
couldn't they have been slaughtering?