I can attenuate you can attenuate he can attenuate we can attenuate you can attenuate they can attenuate
V-ing form
I can be attenuating you can be attenuating he can be attenuating we can be attenuating you can be attenuating they can be attenuating
Perfect
I can have attenuated you can have attenuated he can have attenuated we can have attenuated you can have attenuated they can have attenuated
V-ing perfect
I can have been attenuating you can have been attenuating he can have been attenuating we can have been attenuating you can have been attenuating they can have been attenuating
Negation
Simple form
I cannot attenuate you cannot attenuate he cannot attenuate we cannot attenuate you cannot attenuate they cannot attenuate
V-ing form
I cannot be attenuating you cannot be attenuating he cannot be attenuating we cannot be attenuating you cannot be attenuating they cannot be attenuating
Perfect
I cannot have attenuated you cannot have attenuated he cannot have attenuated we cannot have attenuated you cannot have attenuated they cannot have attenuated
V-ing perfect
I cannot have been attenuating you cannot have been attenuating he cannot have been attenuating we cannot have been attenuating you cannot have been attenuating they cannot have been attenuating
Interrogative form
Simple form
can I attenuate? can you attenuate? can he attenuate? can we attenuate? can you attenuate? can they attenuate?
V-ing form
can I be attenuating? can you be attenuating? can he be attenuating? can we be attenuating? can you be attenuating? can they be attenuating?
Perfect
can I have attenuated? can you have attenuated? can he have attenuated? can we have attenuated? can you have attenuated? can they have attenuated?
V-ing perfect
can I have been attenuating? can you have been attenuating? can he have been attenuating? can we have been attenuating? can you have been attenuating? can they have been attenuating?
Interro-negative form
Simple form
can I not attenuate? can you not attenuate? can he not attenuate? can we not attenuate? can you not attenuate? can they not attenuate?
V-ing form
can I not be attenuating? can you not be attenuating? can he not be attenuating? can we not be attenuating? can you not be attenuating? can they not be attenuating?
Perfect
can I not have attenuated? can you not have attenuated? can he not have attenuated? can we not have attenuated? can you not have attenuated? can they not have attenuated?
V-ing perfect
can I not have been attenuating? can you not have been attenuating? can he not have been attenuating? can we not have been attenuating? can you not have been attenuating? can they not have been attenuating?