English verb conjugation
COULD CARBOXYLATE

Regular verb: carboxylate - carboxylated - carboxylated

Affirmation

Simple form	V-ing form
I could carboxylate you could carboxylate he could carboxylate we could carboxylate you could carboxylate they could carboxylate	I could be carboxylating you could be carboxylating he could be carboxylating we could be carboxylating you could be carboxylating they could be carboxylating
Perfect	V-ing perfect
I could have carboxylated you could have carboxylated he could have carboxylated we could have carboxylated you could have carboxylated they could have carboxylated	I could have been carboxylating you could have been carboxylating he could have been carboxylating we could have been carboxylating you could have been carboxylating they could have been carboxylating

Negation

Simple form	V-ing form
I couldn't carboxylate you couldn't carboxylate he couldn't carboxylate we couldn't carboxylate you couldn't carboxylate they couldn't carboxylate	I couldn't be carboxylating you couldn't be carboxylating he couldn't be carboxylating we couldn't be carboxylating you couldn't be carboxylating they couldn't be carboxylating
Perfect	V-ing perfect
I couldn't have carboxylated you couldn't have carboxylated he couldn't have carboxylated we couldn't have carboxylated you couldn't have carboxylated they couldn't have carboxylated	I couldn't have been carboxylating you couldn't have been carboxylating he couldn't have been carboxylating we couldn't have been carboxylating you couldn't have been carboxylating they couldn't have been carboxylating

Interrogative form

Simple form	V-ing form
could I carboxylate? could you carboxylate? could he carboxylate? could we carboxylate? could you carboxylate? could they carboxylate?	could I be carboxylating? could you be carboxylating? could he be carboxylating? could we be carboxylating? could you be carboxylating? could they be carboxylating?
Perfect	V-ing perfect
could I have carboxylated? could you have carboxylated? could he have carboxylated? could we have carboxylated? could you have carboxylated? could they have carboxylated?	could I have been carboxylating? could you have been carboxylating? could he have been carboxylating? could we have been carboxylating? could you have been carboxylating? could they have been carboxylating?

Interro-negative form

Simple form	V-ing form
couldn't I carboxylate? couldn't you carboxylate? couldn't he carboxylate? couldn't we carboxylate? couldn't you carboxylate? couldn't they carboxylate?	couldn't I be carboxylating? couldn't you be carboxylating? couldn't he be carboxylating? couldn't we be carboxylating? couldn't you be carboxylating? couldn't they be carboxylating?
Perfect	V-ing perfect
couldn't I have carboxylated? couldn't you have carboxylated? couldn't he have carboxylated? couldn't we have carboxylated? couldn't you have carboxylated? couldn't they have carboxylated?	couldn't I have been carboxylating? couldn't you have been carboxylating? couldn't he have been carboxylating? couldn't we have been carboxylating? couldn't you have been carboxylating? couldn't they have been carboxylating?