English verb conjugation
COULD PLURALIZE

Regular verb: pluralize - pluralized - pluralized

Affirmation

Simple form	V-ing form
I could pluralize you could pluralize he could pluralize we could pluralize you could pluralize they could pluralize	I could be pluralizing you could be pluralizing he could be pluralizing we could be pluralizing you could be pluralizing they could be pluralizing
Perfect	V-ing perfect
I could have pluralized you could have pluralized he could have pluralized we could have pluralized you could have pluralized they could have pluralized	I could have been pluralizing you could have been pluralizing he could have been pluralizing we could have been pluralizing you could have been pluralizing they could have been pluralizing

Negation

Simple form	V-ing form
I couldn't pluralize you couldn't pluralize he couldn't pluralize we couldn't pluralize you couldn't pluralize they couldn't pluralize	I couldn't be pluralizing you couldn't be pluralizing he couldn't be pluralizing we couldn't be pluralizing you couldn't be pluralizing they couldn't be pluralizing
Perfect	V-ing perfect
I couldn't have pluralized you couldn't have pluralized he couldn't have pluralized we couldn't have pluralized you couldn't have pluralized they couldn't have pluralized	I couldn't have been pluralizing you couldn't have been pluralizing he couldn't have been pluralizing we couldn't have been pluralizing you couldn't have been pluralizing they couldn't have been pluralizing

Interrogative form

Simple form	V-ing form
could I pluralize? could you pluralize? could he pluralize? could we pluralize? could you pluralize? could they pluralize?	could I be pluralizing? could you be pluralizing? could he be pluralizing? could we be pluralizing? could you be pluralizing? could they be pluralizing?
Perfect	V-ing perfect
could I have pluralized? could you have pluralized? could he have pluralized? could we have pluralized? could you have pluralized? could they have pluralized?	could I have been pluralizing? could you have been pluralizing? could he have been pluralizing? could we have been pluralizing? could you have been pluralizing? could they have been pluralizing?

Interro-negative form

Simple form	V-ing form
couldn't I pluralize? couldn't you pluralize? couldn't he pluralize? couldn't we pluralize? couldn't you pluralize? couldn't they pluralize?	couldn't I be pluralizing? couldn't you be pluralizing? couldn't he be pluralizing? couldn't we be pluralizing? couldn't you be pluralizing? couldn't they be pluralizing?
Perfect	V-ing perfect
couldn't I have pluralized? couldn't you have pluralized? couldn't he have pluralized? couldn't we have pluralized? couldn't you have pluralized? couldn't they have pluralized?	couldn't I have been pluralizing? couldn't you have been pluralizing? couldn't he have been pluralizing? couldn't we have been pluralizing? couldn't you have been pluralizing? couldn't they have been pluralizing?