English verb conjugation
CAN RETROSPECT

Regular verb: retrospect - retrospected - retrospected

Affirmation

Simple form	V-ing form
I can retrospect you can retrospect he can retrospect we can retrospect you can retrospect they can retrospect	I can be retrospecting you can be retrospecting he can be retrospecting we can be retrospecting you can be retrospecting they can be retrospecting
Perfect	V-ing perfect
I can have retrospected you can have retrospected he can have retrospected we can have retrospected you can have retrospected they can have retrospected	I can have been retrospecting you can have been retrospecting he can have been retrospecting we can have been retrospecting you can have been retrospecting they can have been retrospecting

Negation

Simple form	V-ing form
I cannot retrospect you cannot retrospect he cannot retrospect we cannot retrospect you cannot retrospect they cannot retrospect	I cannot be retrospecting you cannot be retrospecting he cannot be retrospecting we cannot be retrospecting you cannot be retrospecting they cannot be retrospecting
Perfect	V-ing perfect
I cannot have retrospected you cannot have retrospected he cannot have retrospected we cannot have retrospected you cannot have retrospected they cannot have retrospected	I cannot have been retrospecting you cannot have been retrospecting he cannot have been retrospecting we cannot have been retrospecting you cannot have been retrospecting they cannot have been retrospecting

Interrogative form

Simple form	V-ing form
can I retrospect? can you retrospect? can he retrospect? can we retrospect? can you retrospect? can they retrospect?	can I be retrospecting? can you be retrospecting? can he be retrospecting? can we be retrospecting? can you be retrospecting? can they be retrospecting?
Perfect	V-ing perfect
can I have retrospected? can you have retrospected? can he have retrospected? can we have retrospected? can you have retrospected? can they have retrospected?	can I have been retrospecting? can you have been retrospecting? can he have been retrospecting? can we have been retrospecting? can you have been retrospecting? can they have been retrospecting?

Interro-negative form

Simple form	V-ing form
can I not retrospect? can you not retrospect? can he not retrospect? can we not retrospect? can you not retrospect? can they not retrospect?	can I not be retrospecting? can you not be retrospecting? can he not be retrospecting? can we not be retrospecting? can you not be retrospecting? can they not be retrospecting?
Perfect	V-ing perfect
can I not have retrospected? can you not have retrospected? can he not have retrospected? can we not have retrospected? can you not have retrospected? can they not have retrospected?	can I not have been retrospecting? can you not have been retrospecting? can he not have been retrospecting? can we not have been retrospecting? can you not have been retrospecting? can they not have been retrospecting?