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