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 can't retrospect you can't retrospect he can't retrospect we can't retrospect you can't retrospect they can't retrospect	I can't be retrospecting you can't be retrospecting he can't be retrospecting we can't be retrospecting you can't be retrospecting they can't be retrospecting
Perfect	V-ing perfect
I can't have retrospected you can't have retrospected he can't have retrospected we can't have retrospected you can't have retrospected they can't have retrospected	I can't have been retrospecting you can't have been retrospecting he can't have been retrospecting we can't have been retrospecting you can't have been retrospecting they can't 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't I retrospect? can't you retrospect? can't he retrospect? can't we retrospect? can't you retrospect? can't they retrospect?	can't I be retrospecting? can't you be retrospecting? can't he be retrospecting? can't we be retrospecting? can't you be retrospecting? can't they be retrospecting?
Perfect	V-ing perfect
can't I have retrospected? can't you have retrospected? can't he have retrospected? can't we have retrospected? can't you have retrospected? can't they have retrospected?	can't I have been retrospecting? can't you have been retrospecting? can't he have been retrospecting? can't we have been retrospecting? can't you have been retrospecting? can't they have been retrospecting?