English verb conjugation
COULD LACTATE

Regular verb: lactate - lactated - lactated

Affirmation

Simple form	V-ing form
I could lactate you could lactate he could lactate we could lactate you could lactate they could lactate	I could be lactating you could be lactating he could be lactating we could be lactating you could be lactating they could be lactating
Perfect	V-ing perfect
I could have lactated you could have lactated he could have lactated we could have lactated you could have lactated they could have lactated	I could have been lactating you could have been lactating he could have been lactating we could have been lactating you could have been lactating they could have been lactating

Negation

Simple form	V-ing form
I couldn't lactate you couldn't lactate he couldn't lactate we couldn't lactate you couldn't lactate they couldn't lactate	I couldn't be lactating you couldn't be lactating he couldn't be lactating we couldn't be lactating you couldn't be lactating they couldn't be lactating
Perfect	V-ing perfect
I couldn't have lactated you couldn't have lactated he couldn't have lactated we couldn't have lactated you couldn't have lactated they couldn't have lactated	I couldn't have been lactating you couldn't have been lactating he couldn't have been lactating we couldn't have been lactating you couldn't have been lactating they couldn't have been lactating

Interrogative form

Simple form	V-ing form
could I lactate? could you lactate? could he lactate? could we lactate? could you lactate? could they lactate?	could I be lactating? could you be lactating? could he be lactating? could we be lactating? could you be lactating? could they be lactating?
Perfect	V-ing perfect
could I have lactated? could you have lactated? could he have lactated? could we have lactated? could you have lactated? could they have lactated?	could I have been lactating? could you have been lactating? could he have been lactating? could we have been lactating? could you have been lactating? could they have been lactating?

Interro-negative form

Simple form	V-ing form
couldn't I lactate? couldn't you lactate? couldn't he lactate? couldn't we lactate? couldn't you lactate? couldn't they lactate?	couldn't I be lactating? couldn't you be lactating? couldn't he be lactating? couldn't we be lactating? couldn't you be lactating? couldn't they be lactating?
Perfect	V-ing perfect
couldn't I have lactated? couldn't you have lactated? couldn't he have lactated? couldn't we have lactated? couldn't you have lactated? couldn't they have lactated?	couldn't I have been lactating? couldn't you have been lactating? couldn't he have been lactating? couldn't we have been lactating? couldn't you have been lactating? couldn't they have been lactating?