could murder
Regular verb: murder - murdered- murdered

Affirmation 	
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I could murder
you could murder
he could murder
we could murder
you could murder
they could murder 	I could be murdering
you could be murdering
he could be murdering
we could be murdering
you could be murdering
they could be murdering	I could have murdered
you could have murdered
he could have murdered
we could have murdered
you could have murdered
they could have murdered	I could have been murdering
you could have been murdering
he could have been murdering
we could have been murdering
you could have been murdering
they could have been murdering	

Negation 	
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I couldn't murder
you couldn't murder
he couldn't murder
we couldn't murder
you couldn't murder
they couldn't murder 	I couldn't be murdering
you couldn't be murdering
he couldn't be murdering
we couldn't be murdering
you couldn't be murdering
they couldn't be murdering	I couldn't have murdered
you couldn't have murdered
he couldn't have murdered
we couldn't have murdered
you couldn't have murdered
they couldn't have murdered	I couldn't have been murdering
you couldn't have been murdering
he couldn't have been murdering
we couldn't have been murdering
you couldn't have been murdering
they couldn't have been murdering	

Interrogative form 	
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could I murder?
could you murder?
could he murder?
could we murder?
could you murder?
could they murder? 	could I be murdering?
could you be murdering?
could he be murdering?
could we be murdering?
could you be murdering?
could they be murdering? 	could I have murdered?
could you have murdered?
could he have murdered?
could we have murdered?
could you have murdered?
could they have murdered? 	could I have been murdering?
could you have been murdering?
could he have been murdering?
could we have been murdering?
could you have been murdering?
could they have been murdering? 	

Interro-negative form 	
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couldn't I murder?
couldn't you murder?
couldn't he murder?
couldn't we murder?
couldn't you murder?
couldn't they murder? 	couldn't I be murdering?
couldn't you be murdering?
couldn't he be murdering?
couldn't we be murdering?
couldn't you be murdering?
couldn't they be murdering? 	couldn't I have murdered?
couldn't you have murdered?
couldn't he have murdered?
couldn't we have murdered?
couldn't you have murdered?
couldn't they have murdered? 	couldn't I have been murdering?
couldn't you have been murdering?
couldn't he have been murdering?
couldn't we have been murdering?
couldn't you have been murdering?
couldn't they have been murdering?