could asphyxiate
Regular verb: asphyxiate - asphyxiated- asphyxiated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could asphyxiate
you could asphyxiate
she could asphyxiate
we could asphyxiate
you could asphyxiate
they could asphyxiate 	I could be asphyxiating
you could be asphyxiating
she could be asphyxiating
we could be asphyxiating
you could be asphyxiating
they could be asphyxiating	I could have asphyxiated
you could have asphyxiated
she could have asphyxiated
we could have asphyxiated
you could have asphyxiated
they could have asphyxiated	I could have been asphyxiating
you could have been asphyxiating
she could have been asphyxiating
we could have been asphyxiating
you could have been asphyxiating
they could have been asphyxiating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not asphyxiate
you could not asphyxiate
she could not asphyxiate
we could not asphyxiate
you could not asphyxiate
they could not asphyxiate 	I could not be asphyxiating
you could not be asphyxiating
she could not be asphyxiating
we could not be asphyxiating
you could not be asphyxiating
they could not be asphyxiating	I could not have asphyxiated
you could not have asphyxiated
she could not have asphyxiated
we could not have asphyxiated
you could not have asphyxiated
they could not have asphyxiated	I could not have been asphyxiating
you could not have been asphyxiating
she could not have been asphyxiating
we could not have been asphyxiating
you could not have been asphyxiating
they could not have been asphyxiating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I asphyxiate?
could you asphyxiate?
could she asphyxiate?
could we asphyxiate?
could you asphyxiate?
could they asphyxiate? 	could I be asphyxiating?
could you be asphyxiating?
could she be asphyxiating?
could we be asphyxiating?
could you be asphyxiating?
could they be asphyxiating? 	could I have asphyxiated?
could you have asphyxiated?
could she have asphyxiated?
could we have asphyxiated?
could you have asphyxiated?
could they have asphyxiated? 	could I have been asphyxiating?
could you have been asphyxiating?
could she have been asphyxiating?
could we have been asphyxiating?
could you have been asphyxiating?
could they have been asphyxiating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not asphyxiate?
could you not asphyxiate?
could she not asphyxiate?
could we not asphyxiate?
could you not asphyxiate?
could they not asphyxiate? 	could I not be asphyxiating?
could you not be asphyxiating?
could she not be asphyxiating?
could we not be asphyxiating?
could you not be asphyxiating?
could they not be asphyxiating? 	could I not have asphyxiated?
could you not have asphyxiated?
could she not have asphyxiated?
could we not have asphyxiated?
could you not have asphyxiated?
could they not have asphyxiated? 	could I not have been asphyxiating?
could you not have been asphyxiating?
could she not have been asphyxiating?
could we not have been asphyxiating?
could you not have been asphyxiating?
could they not have been asphyxiating?