English verb conjugation
COULD LUBRICATE

Regular verb: lubricate - lubricated - lubricated

Affirmation

Simple form	V-ing form
I could lubricate you could lubricate she could lubricate we could lubricate you could lubricate they could lubricate	I could be lubricating you could be lubricating she could be lubricating we could be lubricating you could be lubricating they could be lubricating
Perfect	V-ing perfect
I could have lubricated you could have lubricated she could have lubricated we could have lubricated you could have lubricated they could have lubricated	I could have been lubricating you could have been lubricating she could have been lubricating we could have been lubricating you could have been lubricating they could have been lubricating

Negation

Simple form	V-ing form
I could not lubricate you could not lubricate she could not lubricate we could not lubricate you could not lubricate they could not lubricate	I could not be lubricating you could not be lubricating she could not be lubricating we could not be lubricating you could not be lubricating they could not be lubricating
Perfect	V-ing perfect
I could not have lubricated you could not have lubricated she could not have lubricated we could not have lubricated you could not have lubricated they could not have lubricated	I could not have been lubricating you could not have been lubricating she could not have been lubricating we could not have been lubricating you could not have been lubricating they could not have been lubricating

Interrogative form

Simple form	V-ing form
could I lubricate? could you lubricate? could she lubricate? could we lubricate? could you lubricate? could they lubricate?	could I be lubricating? could you be lubricating? could she be lubricating? could we be lubricating? could you be lubricating? could they be lubricating?
Perfect	V-ing perfect
could I have lubricated? could you have lubricated? could she have lubricated? could we have lubricated? could you have lubricated? could they have lubricated?	could I have been lubricating? could you have been lubricating? could she have been lubricating? could we have been lubricating? could you have been lubricating? could they have been lubricating?

Interro-negative form

Simple form	V-ing form
could I not lubricate? could you not lubricate? could she not lubricate? could we not lubricate? could you not lubricate? could they not lubricate?	could I not be lubricating? could you not be lubricating? could she not be lubricating? could we not be lubricating? could you not be lubricating? could they not be lubricating?
Perfect	V-ing perfect
could I not have lubricated? could you not have lubricated? could she not have lubricated? could we not have lubricated? could you not have lubricated? could they not have lubricated?	could I not have been lubricating? could you not have been lubricating? could she not have been lubricating? could we not have been lubricating? could you not have been lubricating? could they not have been lubricating?