could agonize
Regular verb: agonize - agonized- agonized

Affirmation 	
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I could agonize
you could agonize
he could agonize
we could agonize
you could agonize
they could agonize 	I could be agonizing
you could be agonizing
he could be agonizing
we could be agonizing
you could be agonizing
they could be agonizing	I could have agonized
you could have agonized
he could have agonized
we could have agonized
you could have agonized
they could have agonized	I could have been agonizing
you could have been agonizing
he could have been agonizing
we could have been agonizing
you could have been agonizing
they could have been agonizing	

Negation 	
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I couldn't agonize
you couldn't agonize
he couldn't agonize
we couldn't agonize
you couldn't agonize
they couldn't agonize 	I couldn't be agonizing
you couldn't be agonizing
he couldn't be agonizing
we couldn't be agonizing
you couldn't be agonizing
they couldn't be agonizing	I couldn't have agonized
you couldn't have agonized
he couldn't have agonized
we couldn't have agonized
you couldn't have agonized
they couldn't have agonized	I couldn't have been agonizing
you couldn't have been agonizing
he couldn't have been agonizing
we couldn't have been agonizing
you couldn't have been agonizing
they couldn't have been agonizing	

Interrogative form 	
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could I agonize?
could you agonize?
could he agonize?
could we agonize?
could you agonize?
could they agonize? 	could I be agonizing?
could you be agonizing?
could he be agonizing?
could we be agonizing?
could you be agonizing?
could they be agonizing? 	could I have agonized?
could you have agonized?
could he have agonized?
could we have agonized?
could you have agonized?
could they have agonized? 	could I have been agonizing?
could you have been agonizing?
could he have been agonizing?
could we have been agonizing?
could you have been agonizing?
could they have been agonizing? 	

Interro-negative form 	
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couldn't I agonize?
couldn't you agonize?
couldn't he agonize?
couldn't we agonize?
couldn't you agonize?
couldn't they agonize? 	couldn't I be agonizing?
couldn't you be agonizing?
couldn't he be agonizing?
couldn't we be agonizing?
couldn't you be agonizing?
couldn't they be agonizing? 	couldn't I have agonized?
couldn't you have agonized?
couldn't he have agonized?
couldn't we have agonized?
couldn't you have agonized?
couldn't they have agonized? 	couldn't I have been agonizing?
couldn't you have been agonizing?
couldn't he have been agonizing?
couldn't we have been agonizing?
couldn't you have been agonizing?
couldn't they have been agonizing?