can detect
Regular verb: detect - detected- detected

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can detect
you can detect
he can detect
we can detect
you can detect
they can detect 	I can be detecting
you can be detecting
he can be detecting
we can be detecting
you can be detecting
they can be detecting	I can have detected
you can have detected
he can have detected
we can have detected
you can have detected
they can have detected	I can have been detecting
you can have been detecting
he can have been detecting
we can have been detecting
you can have been detecting
they can have been detecting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't detect
you can't detect
he can't detect
we can't detect
you can't detect
they can't detect 	I can't be detecting
you can't be detecting
he can't be detecting
we can't be detecting
you can't be detecting
they can't be detecting	I can't have detected
you can't have detected
he can't have detected
we can't have detected
you can't have detected
they can't have detected	I can't have been detecting
you can't have been detecting
he can't have been detecting
we can't have been detecting
you can't have been detecting
they can't have been detecting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I detect?
can you detect?
can he detect?
can we detect?
can you detect?
can they detect? 	can I be detecting?
can you be detecting?
can he be detecting?
can we be detecting?
can you be detecting?
can they be detecting? 	can I have detected?
can you have detected?
can he have detected?
can we have detected?
can you have detected?
can they have detected? 	can I have been detecting?
can you have been detecting?
can he have been detecting?
can we have been detecting?
can you have been detecting?
can they have been detecting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I detect?
can't you detect?
can't he detect?
can't we detect?
can't you detect?
can't they detect? 	can't I be detecting?
can't you be detecting?
can't he be detecting?
can't we be detecting?
can't you be detecting?
can't they be detecting? 	can't I have detected?
can't you have detected?
can't he have detected?
can't we have detected?
can't you have detected?
can't they have detected? 	can't I have been detecting?
can't you have been detecting?
can't he have been detecting?
can't we have been detecting?
can't you have been detecting?
can't they have been detecting?