English verb conjugation
CAN DETECT

Regular verb: detect - detected - detected

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?