could proportionate
Regular verb: proportionate - proportionated- proportionated

Affirmation 	
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I could proportionate
you could proportionate
she could proportionate
we could proportionate
you could proportionate
they could proportionate 	I could be proportionating
you could be proportionating
she could be proportionating
we could be proportionating
you could be proportionating
they could be proportionating	I could have proportionated
you could have proportionated
she could have proportionated
we could have proportionated
you could have proportionated
they could have proportionated	I could have been proportionating
you could have been proportionating
she could have been proportionating
we could have been proportionating
you could have been proportionating
they could have been proportionating	

Negation 	
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I couldn't proportionate
you couldn't proportionate
she couldn't proportionate
we couldn't proportionate
you couldn't proportionate
they couldn't proportionate 	I couldn't be proportionating
you couldn't be proportionating
she couldn't be proportionating
we couldn't be proportionating
you couldn't be proportionating
they couldn't be proportionating	I couldn't have proportionated
you couldn't have proportionated
she couldn't have proportionated
we couldn't have proportionated
you couldn't have proportionated
they couldn't have proportionated	I couldn't have been proportionating
you couldn't have been proportionating
she couldn't have been proportionating
we couldn't have been proportionating
you couldn't have been proportionating
they couldn't have been proportionating	

Interrogative form 	
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could I proportionate?
could you proportionate?
could she proportionate?
could we proportionate?
could you proportionate?
could they proportionate? 	could I be proportionating?
could you be proportionating?
could she be proportionating?
could we be proportionating?
could you be proportionating?
could they be proportionating? 	could I have proportionated?
could you have proportionated?
could she have proportionated?
could we have proportionated?
could you have proportionated?
could they have proportionated? 	could I have been proportionating?
could you have been proportionating?
could she have been proportionating?
could we have been proportionating?
could you have been proportionating?
could they have been proportionating? 	

Interro-negative form 	
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couldn't I proportionate?
couldn't you proportionate?
couldn't she proportionate?
couldn't we proportionate?
couldn't you proportionate?
couldn't they proportionate? 	couldn't I be proportionating?
couldn't you be proportionating?
couldn't she be proportionating?
couldn't we be proportionating?
couldn't you be proportionating?
couldn't they be proportionating? 	couldn't I have proportionated?
couldn't you have proportionated?
couldn't she have proportionated?
couldn't we have proportionated?
couldn't you have proportionated?
couldn't they have proportionated? 	couldn't I have been proportionating?
couldn't you have been proportionating?
couldn't she have been proportionating?
couldn't we have been proportionating?
couldn't you have been proportionating?
couldn't they have been proportionating?