can deduce
Regular verb: deduce - deduced- deduced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can deduce
you can deduce
she can deduce
we can deduce
you can deduce
they can deduce 	I can be deducing
you can be deducing
she can be deducing
we can be deducing
you can be deducing
they can be deducing	I can have deduced
you can have deduced
she can have deduced
we can have deduced
you can have deduced
they can have deduced	I can have been deducing
you can have been deducing
she can have been deducing
we can have been deducing
you can have been deducing
they can have been deducing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't deduce
you can't deduce
she can't deduce
we can't deduce
you can't deduce
they can't deduce 	I can't be deducing
you can't be deducing
she can't be deducing
we can't be deducing
you can't be deducing
they can't be deducing	I can't have deduced
you can't have deduced
she can't have deduced
we can't have deduced
you can't have deduced
they can't have deduced	I can't have been deducing
you can't have been deducing
she can't have been deducing
we can't have been deducing
you can't have been deducing
they can't have been deducing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I deduce?
can you deduce?
can she deduce?
can we deduce?
can you deduce?
can they deduce? 	can I be deducing?
can you be deducing?
can she be deducing?
can we be deducing?
can you be deducing?
can they be deducing? 	can I have deduced?
can you have deduced?
can she have deduced?
can we have deduced?
can you have deduced?
can they have deduced? 	can I have been deducing?
can you have been deducing?
can she have been deducing?
can we have been deducing?
can you have been deducing?
can they have been deducing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I deduce?
can't you deduce?
can't she deduce?
can't we deduce?
can't you deduce?
can't they deduce? 	can't I be deducing?
can't you be deducing?
can't she be deducing?
can't we be deducing?
can't you be deducing?
can't they be deducing? 	can't I have deduced?
can't you have deduced?
can't she have deduced?
can't we have deduced?
can't you have deduced?
can't they have deduced? 	can't I have been deducing?
can't you have been deducing?
can't she have been deducing?
can't we have been deducing?
can't you have been deducing?
can't they have been deducing?