could devitalize
Regular verb: devitalize - devitalized- devitalized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could devitalize
you could devitalize
she could devitalize
we could devitalize
you could devitalize
they could devitalize 	I could be devitalizing
you could be devitalizing
she could be devitalizing
we could be devitalizing
you could be devitalizing
they could be devitalizing	I could have devitalized
you could have devitalized
she could have devitalized
we could have devitalized
you could have devitalized
they could have devitalized	I could have been devitalizing
you could have been devitalizing
she could have been devitalizing
we could have been devitalizing
you could have been devitalizing
they could have been devitalizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not devitalize
you could not devitalize
she could not devitalize
we could not devitalize
you could not devitalize
they could not devitalize 	I could not be devitalizing
you could not be devitalizing
she could not be devitalizing
we could not be devitalizing
you could not be devitalizing
they could not be devitalizing	I could not have devitalized
you could not have devitalized
she could not have devitalized
we could not have devitalized
you could not have devitalized
they could not have devitalized	I could not have been devitalizing
you could not have been devitalizing
she could not have been devitalizing
we could not have been devitalizing
you could not have been devitalizing
they could not have been devitalizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I devitalize?
could you devitalize?
could she devitalize?
could we devitalize?
could you devitalize?
could they devitalize? 	could I be devitalizing?
could you be devitalizing?
could she be devitalizing?
could we be devitalizing?
could you be devitalizing?
could they be devitalizing? 	could I have devitalized?
could you have devitalized?
could she have devitalized?
could we have devitalized?
could you have devitalized?
could they have devitalized? 	could I have been devitalizing?
could you have been devitalizing?
could she have been devitalizing?
could we have been devitalizing?
could you have been devitalizing?
could they have been devitalizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not devitalize?
could you not devitalize?
could she not devitalize?
could we not devitalize?
could you not devitalize?
could they not devitalize? 	could I not be devitalizing?
could you not be devitalizing?
could she not be devitalizing?
could we not be devitalizing?
could you not be devitalizing?
could they not be devitalizing? 	could I not have devitalized?
could you not have devitalized?
could she not have devitalized?
could we not have devitalized?
could you not have devitalized?
could they not have devitalized? 	could I not have been devitalizing?
could you not have been devitalizing?
could she not have been devitalizing?
could we not have been devitalizing?
could you not have been devitalizing?
could they not have been devitalizing?