could commission
Regular verb: commission - commissioned- commissioned

Affirmation 	
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I could commission
you could commission
he could commission
we could commission
you could commission
they could commission 	I could be commissioning
you could be commissioning
he could be commissioning
we could be commissioning
you could be commissioning
they could be commissioning	I could have commissioned
you could have commissioned
he could have commissioned
we could have commissioned
you could have commissioned
they could have commissioned	I could have been commissioning
you could have been commissioning
he could have been commissioning
we could have been commissioning
you could have been commissioning
they could have been commissioning	

Negation 	
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I couldn't commission
you couldn't commission
he couldn't commission
we couldn't commission
you couldn't commission
they couldn't commission 	I couldn't be commissioning
you couldn't be commissioning
he couldn't be commissioning
we couldn't be commissioning
you couldn't be commissioning
they couldn't be commissioning	I couldn't have commissioned
you couldn't have commissioned
he couldn't have commissioned
we couldn't have commissioned
you couldn't have commissioned
they couldn't have commissioned	I couldn't have been commissioning
you couldn't have been commissioning
he couldn't have been commissioning
we couldn't have been commissioning
you couldn't have been commissioning
they couldn't have been commissioning	

Interrogative form 	
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could I commission?
could you commission?
could he commission?
could we commission?
could you commission?
could they commission? 	could I be commissioning?
could you be commissioning?
could he be commissioning?
could we be commissioning?
could you be commissioning?
could they be commissioning? 	could I have commissioned?
could you have commissioned?
could he have commissioned?
could we have commissioned?
could you have commissioned?
could they have commissioned? 	could I have been commissioning?
could you have been commissioning?
could he have been commissioning?
could we have been commissioning?
could you have been commissioning?
could they have been commissioning? 	

Interro-negative form 	
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couldn't I commission?
couldn't you commission?
couldn't he commission?
couldn't we commission?
couldn't you commission?
couldn't they commission? 	couldn't I be commissioning?
couldn't you be commissioning?
couldn't he be commissioning?
couldn't we be commissioning?
couldn't you be commissioning?
couldn't they be commissioning? 	couldn't I have commissioned?
couldn't you have commissioned?
couldn't he have commissioned?
couldn't we have commissioned?
couldn't you have commissioned?
couldn't they have commissioned? 	couldn't I have been commissioning?
couldn't you have been commissioning?
couldn't he have been commissioning?
couldn't we have been commissioning?
couldn't you have been commissioning?
couldn't they have been commissioning?