English verb conjugation
COULD LUTEINIZE

Regular verb: luteinize - luteinized - luteinized

Affirmation

Simple form	V-ing form
I could luteinize you could luteinize he could luteinize we could luteinize you could luteinize they could luteinize	I could be luteinizing you could be luteinizing he could be luteinizing we could be luteinizing you could be luteinizing they could be luteinizing
Perfect	V-ing perfect
I could have luteinized you could have luteinized he could have luteinized we could have luteinized you could have luteinized they could have luteinized	I could have been luteinizing you could have been luteinizing he could have been luteinizing we could have been luteinizing you could have been luteinizing they could have been luteinizing

Negation

Simple form	V-ing form
I couldn't luteinize you couldn't luteinize he couldn't luteinize we couldn't luteinize you couldn't luteinize they couldn't luteinize	I couldn't be luteinizing you couldn't be luteinizing he couldn't be luteinizing we couldn't be luteinizing you couldn't be luteinizing they couldn't be luteinizing
Perfect	V-ing perfect
I couldn't have luteinized you couldn't have luteinized he couldn't have luteinized we couldn't have luteinized you couldn't have luteinized they couldn't have luteinized	I couldn't have been luteinizing you couldn't have been luteinizing he couldn't have been luteinizing we couldn't have been luteinizing you couldn't have been luteinizing they couldn't have been luteinizing

Interrogative form

Simple form	V-ing form
could I luteinize? could you luteinize? could he luteinize? could we luteinize? could you luteinize? could they luteinize?	could I be luteinizing? could you be luteinizing? could he be luteinizing? could we be luteinizing? could you be luteinizing? could they be luteinizing?
Perfect	V-ing perfect
could I have luteinized? could you have luteinized? could he have luteinized? could we have luteinized? could you have luteinized? could they have luteinized?	could I have been luteinizing? could you have been luteinizing? could he have been luteinizing? could we have been luteinizing? could you have been luteinizing? could they have been luteinizing?

Interro-negative form

Simple form	V-ing form
couldn't I luteinize? couldn't you luteinize? couldn't he luteinize? couldn't we luteinize? couldn't you luteinize? couldn't they luteinize?	couldn't I be luteinizing? couldn't you be luteinizing? couldn't he be luteinizing? couldn't we be luteinizing? couldn't you be luteinizing? couldn't they be luteinizing?
Perfect	V-ing perfect
couldn't I have luteinized? couldn't you have luteinized? couldn't he have luteinized? couldn't we have luteinized? couldn't you have luteinized? couldn't they have luteinized?	couldn't I have been luteinizing? couldn't you have been luteinizing? couldn't he have been luteinizing? couldn't we have been luteinizing? couldn't you have been luteinizing? couldn't they have been luteinizing?