I can deconcentrate you can deconcentrate he can deconcentrate we can deconcentrate you can deconcentrate they can deconcentrate
V-ing form
I can be deconcentrating you can be deconcentrating he can be deconcentrating we can be deconcentrating you can be deconcentrating they can be deconcentrating
Perfect
I can have deconcentrated you can have deconcentrated he can have deconcentrated we can have deconcentrated you can have deconcentrated they can have deconcentrated
V-ing perfect
I can have been deconcentrating you can have been deconcentrating he can have been deconcentrating we can have been deconcentrating you can have been deconcentrating they can have been deconcentrating
Negation
Simple form
I cannot deconcentrate you cannot deconcentrate he cannot deconcentrate we cannot deconcentrate you cannot deconcentrate they cannot deconcentrate
V-ing form
I cannot be deconcentrating you cannot be deconcentrating he cannot be deconcentrating we cannot be deconcentrating you cannot be deconcentrating they cannot be deconcentrating
Perfect
I cannot have deconcentrated you cannot have deconcentrated he cannot have deconcentrated we cannot have deconcentrated you cannot have deconcentrated they cannot have deconcentrated
V-ing perfect
I cannot have been deconcentrating you cannot have been deconcentrating he cannot have been deconcentrating we cannot have been deconcentrating you cannot have been deconcentrating they cannot have been deconcentrating
Interrogative form
Simple form
can I deconcentrate? can you deconcentrate? can he deconcentrate? can we deconcentrate? can you deconcentrate? can they deconcentrate?
V-ing form
can I be deconcentrating? can you be deconcentrating? can he be deconcentrating? can we be deconcentrating? can you be deconcentrating? can they be deconcentrating?
Perfect
can I have deconcentrated? can you have deconcentrated? can he have deconcentrated? can we have deconcentrated? can you have deconcentrated? can they have deconcentrated?
V-ing perfect
can I have been deconcentrating? can you have been deconcentrating? can he have been deconcentrating? can we have been deconcentrating? can you have been deconcentrating? can they have been deconcentrating?
Interro-negative form
Simple form
can I not deconcentrate? can you not deconcentrate? can he not deconcentrate? can we not deconcentrate? can you not deconcentrate? can they not deconcentrate?
V-ing form
can I not be deconcentrating? can you not be deconcentrating? can he not be deconcentrating? can we not be deconcentrating? can you not be deconcentrating? can they not be deconcentrating?
Perfect
can I not have deconcentrated? can you not have deconcentrated? can he not have deconcentrated? can we not have deconcentrated? can you not have deconcentrated? can they not have deconcentrated?
V-ing perfect
can I not have been deconcentrating? can you not have been deconcentrating? can he not have been deconcentrating? can we not have been deconcentrating? can you not have been deconcentrating? can they not have been deconcentrating?