can attenuate
Regular verb: attenuate - attenuated- attenuated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can attenuate
you can attenuate
she can attenuate
we can attenuate
you can attenuate
they can attenuate 	I can be attenuating
you can be attenuating
she can be attenuating
we can be attenuating
you can be attenuating
they can be attenuating	I can have attenuated
you can have attenuated
she can have attenuated
we can have attenuated
you can have attenuated
they can have attenuated	I can have been attenuating
you can have been attenuating
she can have been attenuating
we can have been attenuating
you can have been attenuating
they can have been attenuating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't attenuate
you can't attenuate
she can't attenuate
we can't attenuate
you can't attenuate
they can't attenuate 	I can't be attenuating
you can't be attenuating
she can't be attenuating
we can't be attenuating
you can't be attenuating
they can't be attenuating	I can't have attenuated
you can't have attenuated
she can't have attenuated
we can't have attenuated
you can't have attenuated
they can't have attenuated	I can't have been attenuating
you can't have been attenuating
she can't have been attenuating
we can't have been attenuating
you can't have been attenuating
they can't have been attenuating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I attenuate?
can you attenuate?
can she attenuate?
can we attenuate?
can you attenuate?
can they attenuate? 	can I be attenuating?
can you be attenuating?
can she be attenuating?
can we be attenuating?
can you be attenuating?
can they be attenuating? 	can I have attenuated?
can you have attenuated?
can she have attenuated?
can we have attenuated?
can you have attenuated?
can they have attenuated? 	can I have been attenuating?
can you have been attenuating?
can she have been attenuating?
can we have been attenuating?
can you have been attenuating?
can they have been attenuating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I attenuate?
can't you attenuate?
can't she attenuate?
can't we attenuate?
can't you attenuate?
can't they attenuate? 	can't I be attenuating?
can't you be attenuating?
can't she be attenuating?
can't we be attenuating?
can't you be attenuating?
can't they be attenuating? 	can't I have attenuated?
can't you have attenuated?
can't she have attenuated?
can't we have attenuated?
can't you have attenuated?
can't they have attenuated? 	can't I have been attenuating?
can't you have been attenuating?
can't she have been attenuating?
can't we have been attenuating?
can't you have been attenuating?
can't they have been attenuating?