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 can't deconcentrate you can't deconcentrate he can't deconcentrate we can't deconcentrate you can't deconcentrate they can't deconcentrate
V-ing form
I can't be deconcentrating you can't be deconcentrating he can't be deconcentrating we can't be deconcentrating you can't be deconcentrating they can't be deconcentrating
Perfect
I can't have deconcentrated you can't have deconcentrated he can't have deconcentrated we can't have deconcentrated you can't have deconcentrated they can't have deconcentrated
V-ing perfect
I can't have been deconcentrating you can't have been deconcentrating he can't have been deconcentrating we can't have been deconcentrating you can't have been deconcentrating they can't 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't I deconcentrate? can't you deconcentrate? can't he deconcentrate? can't we deconcentrate? can't you deconcentrate? can't they deconcentrate?
V-ing form
can't I be deconcentrating? can't you be deconcentrating? can't he be deconcentrating? can't we be deconcentrating? can't you be deconcentrating? can't they be deconcentrating?
Perfect
can't I have deconcentrated? can't you have deconcentrated? can't he have deconcentrated? can't we have deconcentrated? can't you have deconcentrated? can't they have deconcentrated?
V-ing perfect
can't I have been deconcentrating? can't you have been deconcentrating? can't he have been deconcentrating? can't we have been deconcentrating? can't you have been deconcentrating? can't they have been deconcentrating?