English verb conjugation
COULD TITRATE

Regular verb: titrate - titrated - titrated

Affirmation

Simple form	V-ing form
I could titrate you could titrate he could titrate we could titrate you could titrate they could titrate	I could be titrating you could be titrating he could be titrating we could be titrating you could be titrating they could be titrating
Perfect	V-ing perfect
I could have titrated you could have titrated he could have titrated we could have titrated you could have titrated they could have titrated	I could have been titrating you could have been titrating he could have been titrating we could have been titrating you could have been titrating they could have been titrating

Negation

Simple form	V-ing form
I couldn't titrate you couldn't titrate he couldn't titrate we couldn't titrate you couldn't titrate they couldn't titrate	I couldn't be titrating you couldn't be titrating he couldn't be titrating we couldn't be titrating you couldn't be titrating they couldn't be titrating
Perfect	V-ing perfect
I couldn't have titrated you couldn't have titrated he couldn't have titrated we couldn't have titrated you couldn't have titrated they couldn't have titrated	I couldn't have been titrating you couldn't have been titrating he couldn't have been titrating we couldn't have been titrating you couldn't have been titrating they couldn't have been titrating

Interrogative form

Simple form	V-ing form
could I titrate? could you titrate? could he titrate? could we titrate? could you titrate? could they titrate?	could I be titrating? could you be titrating? could he be titrating? could we be titrating? could you be titrating? could they be titrating?
Perfect	V-ing perfect
could I have titrated? could you have titrated? could he have titrated? could we have titrated? could you have titrated? could they have titrated?	could I have been titrating? could you have been titrating? could he have been titrating? could we have been titrating? could you have been titrating? could they have been titrating?

Interro-negative form

Simple form	V-ing form
couldn't I titrate? couldn't you titrate? couldn't he titrate? couldn't we titrate? couldn't you titrate? couldn't they titrate?	couldn't I be titrating? couldn't you be titrating? couldn't he be titrating? couldn't we be titrating? couldn't you be titrating? couldn't they be titrating?
Perfect	V-ing perfect
couldn't I have titrated? couldn't you have titrated? couldn't he have titrated? couldn't we have titrated? couldn't you have titrated? couldn't they have titrated?	couldn't I have been titrating? couldn't you have been titrating? couldn't he have been titrating? couldn't we have been titrating? couldn't you have been titrating? couldn't they have been titrating?