can escalate
Regular verb: escalate - escalated- escalated

Affirmation 	
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I can escalate
you can escalate
he can escalate
we can escalate
you can escalate
they can escalate 	I can be escalating
you can be escalating
he can be escalating
we can be escalating
you can be escalating
they can be escalating	I can have escalated
you can have escalated
he can have escalated
we can have escalated
you can have escalated
they can have escalated	I can have been escalating
you can have been escalating
he can have been escalating
we can have been escalating
you can have been escalating
they can have been escalating	

Negation 	
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I cannot escalate
you cannot escalate
he cannot escalate
we cannot escalate
you cannot escalate
they cannot escalate 	I cannot be escalating
you cannot be escalating
he cannot be escalating
we cannot be escalating
you cannot be escalating
they cannot be escalating	I cannot have escalated
you cannot have escalated
he cannot have escalated
we cannot have escalated
you cannot have escalated
they cannot have escalated	I cannot have been escalating
you cannot have been escalating
he cannot have been escalating
we cannot have been escalating
you cannot have been escalating
they cannot have been escalating	

Interrogative form 	
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can I escalate?
can you escalate?
can he escalate?
can we escalate?
can you escalate?
can they escalate? 	can I be escalating?
can you be escalating?
can he be escalating?
can we be escalating?
can you be escalating?
can they be escalating? 	can I have escalated?
can you have escalated?
can he have escalated?
can we have escalated?
can you have escalated?
can they have escalated? 	can I have been escalating?
can you have been escalating?
can he have been escalating?
can we have been escalating?
can you have been escalating?
can they have been escalating? 	

Interro-negative form 	
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can I not escalate?
can you not escalate?
can he not escalate?
can we not escalate?
can you not escalate?
can they not escalate? 	can I not be escalating?
can you not be escalating?
can he not be escalating?
can we not be escalating?
can you not be escalating?
can they not be escalating? 	can I not have escalated?
can you not have escalated?
can he not have escalated?
can we not have escalated?
can you not have escalated?
can they not have escalated? 	can I not have been escalating?
can you not have been escalating?
can he not have been escalating?
can we not have been escalating?
can you not have been escalating?
can they not have been escalating?