could tolerate
Regular verb: tolerate - tolerated- tolerated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could tolerate
you could tolerate
he could tolerate
we could tolerate
you could tolerate
they could tolerate 	I could be tolerating
you could be tolerating
he could be tolerating
we could be tolerating
you could be tolerating
they could be tolerating	I could have tolerated
you could have tolerated
he could have tolerated
we could have tolerated
you could have tolerated
they could have tolerated	I could have been tolerating
you could have been tolerating
he could have been tolerating
we could have been tolerating
you could have been tolerating
they could have been tolerating	

Negation 	
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I couldn't tolerate
you couldn't tolerate
he couldn't tolerate
we couldn't tolerate
you couldn't tolerate
they couldn't tolerate 	I couldn't be tolerating
you couldn't be tolerating
he couldn't be tolerating
we couldn't be tolerating
you couldn't be tolerating
they couldn't be tolerating	I couldn't have tolerated
you couldn't have tolerated
he couldn't have tolerated
we couldn't have tolerated
you couldn't have tolerated
they couldn't have tolerated	I couldn't have been tolerating
you couldn't have been tolerating
he couldn't have been tolerating
we couldn't have been tolerating
you couldn't have been tolerating
they couldn't have been tolerating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I tolerate?
could you tolerate?
could he tolerate?
could we tolerate?
could you tolerate?
could they tolerate? 	could I be tolerating?
could you be tolerating?
could he be tolerating?
could we be tolerating?
could you be tolerating?
could they be tolerating? 	could I have tolerated?
could you have tolerated?
could he have tolerated?
could we have tolerated?
could you have tolerated?
could they have tolerated? 	could I have been tolerating?
could you have been tolerating?
could he have been tolerating?
could we have been tolerating?
could you have been tolerating?
could they have been tolerating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I tolerate?
couldn't you tolerate?
couldn't he tolerate?
couldn't we tolerate?
couldn't you tolerate?
couldn't they tolerate? 	couldn't I be tolerating?
couldn't you be tolerating?
couldn't he be tolerating?
couldn't we be tolerating?
couldn't you be tolerating?
couldn't they be tolerating? 	couldn't I have tolerated?
couldn't you have tolerated?
couldn't he have tolerated?
couldn't we have tolerated?
couldn't you have tolerated?
couldn't they have tolerated? 	couldn't I have been tolerating?
couldn't you have been tolerating?
couldn't he have been tolerating?
couldn't we have been tolerating?
couldn't you have been tolerating?
couldn't they have been tolerating?