English verb conjugation
COULD RECHROMATOGRAPH

Regular verb: rechromatograph - rechromatographed - rechromatographed

Affirmation

Simple form	V-ing form
I could rechromatograph you could rechromatograph she could rechromatograph we could rechromatograph you could rechromatograph they could rechromatograph	I could be rechromatographing you could be rechromatographing she could be rechromatographing we could be rechromatographing you could be rechromatographing they could be rechromatographing
Perfect	V-ing perfect
I could have rechromatographed you could have rechromatographed she could have rechromatographed we could have rechromatographed you could have rechromatographed they could have rechromatographed	I could have been rechromatographing you could have been rechromatographing she could have been rechromatographing we could have been rechromatographing you could have been rechromatographing they could have been rechromatographing

Negation

Simple form	V-ing form
I couldn't rechromatograph you couldn't rechromatograph she couldn't rechromatograph we couldn't rechromatograph you couldn't rechromatograph they couldn't rechromatograph	I couldn't be rechromatographing you couldn't be rechromatographing she couldn't be rechromatographing we couldn't be rechromatographing you couldn't be rechromatographing they couldn't be rechromatographing
Perfect	V-ing perfect
I couldn't have rechromatographed you couldn't have rechromatographed she couldn't have rechromatographed we couldn't have rechromatographed you couldn't have rechromatographed they couldn't have rechromatographed	I couldn't have been rechromatographing you couldn't have been rechromatographing she couldn't have been rechromatographing we couldn't have been rechromatographing you couldn't have been rechromatographing they couldn't have been rechromatographing

Interrogative form

Simple form	V-ing form
could I rechromatograph? could you rechromatograph? could she rechromatograph? could we rechromatograph? could you rechromatograph? could they rechromatograph?	could I be rechromatographing? could you be rechromatographing? could she be rechromatographing? could we be rechromatographing? could you be rechromatographing? could they be rechromatographing?
Perfect	V-ing perfect
could I have rechromatographed? could you have rechromatographed? could she have rechromatographed? could we have rechromatographed? could you have rechromatographed? could they have rechromatographed?	could I have been rechromatographing? could you have been rechromatographing? could she have been rechromatographing? could we have been rechromatographing? could you have been rechromatographing? could they have been rechromatographing?

Interro-negative form

Simple form	V-ing form
couldn't I rechromatograph? couldn't you rechromatograph? couldn't she rechromatograph? couldn't we rechromatograph? couldn't you rechromatograph? couldn't they rechromatograph?	couldn't I be rechromatographing? couldn't you be rechromatographing? couldn't she be rechromatographing? couldn't we be rechromatographing? couldn't you be rechromatographing? couldn't they be rechromatographing?
Perfect	V-ing perfect
couldn't I have rechromatographed? couldn't you have rechromatographed? couldn't she have rechromatographed? couldn't we have rechromatographed? couldn't you have rechromatographed? couldn't they have rechromatographed?	couldn't I have been rechromatographing? couldn't you have been rechromatographing? couldn't she have been rechromatographing? couldn't we have been rechromatographing? couldn't you have been rechromatographing? couldn't they have been rechromatographing?