English verb conjugation
COULD CULTURE

Regular verb: culture - cultured - cultured

Affirmation

Simple form	V-ing form
I could culture you could culture she could culture we could culture you could culture they could culture	I could be culturing you could be culturing she could be culturing we could be culturing you could be culturing they could be culturing
Perfect	V-ing perfect
I could have cultured you could have cultured she could have cultured we could have cultured you could have cultured they could have cultured	I could have been culturing you could have been culturing she could have been culturing we could have been culturing you could have been culturing they could have been culturing

Negation

Simple form	V-ing form
I could not culture you could not culture she could not culture we could not culture you could not culture they could not culture	I could not be culturing you could not be culturing she could not be culturing we could not be culturing you could not be culturing they could not be culturing
Perfect	V-ing perfect
I could not have cultured you could not have cultured she could not have cultured we could not have cultured you could not have cultured they could not have cultured	I could not have been culturing you could not have been culturing she could not have been culturing we could not have been culturing you could not have been culturing they could not have been culturing

Interrogative form

Simple form	V-ing form
could I culture? could you culture? could she culture? could we culture? could you culture? could they culture?	could I be culturing? could you be culturing? could she be culturing? could we be culturing? could you be culturing? could they be culturing?
Perfect	V-ing perfect
could I have cultured? could you have cultured? could she have cultured? could we have cultured? could you have cultured? could they have cultured?	could I have been culturing? could you have been culturing? could she have been culturing? could we have been culturing? could you have been culturing? could they have been culturing?

Interro-negative form

Simple form	V-ing form
could I not culture? could you not culture? could she not culture? could we not culture? could you not culture? could they not culture?	could I not be culturing? could you not be culturing? could she not be culturing? could we not be culturing? could you not be culturing? could they not be culturing?
Perfect	V-ing perfect
could I not have cultured? could you not have cultured? could she not have cultured? could we not have cultured? could you not have cultured? could they not have cultured?	could I not have been culturing? could you not have been culturing? could she not have been culturing? could we not have been culturing? could you not have been culturing? could they not have been culturing?