English verb conjugation
COULD SYSTEMIZE

Regular verb: systemize - systemized - systemized

Affirmation

Simple form	V-ing form
I could systemize you could systemize she could systemize we could systemize you could systemize they could systemize	I could be systemizing you could be systemizing she could be systemizing we could be systemizing you could be systemizing they could be systemizing
Perfect	V-ing perfect
I could have systemized you could have systemized she could have systemized we could have systemized you could have systemized they could have systemized	I could have been systemizing you could have been systemizing she could have been systemizing we could have been systemizing you could have been systemizing they could have been systemizing

Negation

Simple form	V-ing form
I couldn't systemize you couldn't systemize she couldn't systemize we couldn't systemize you couldn't systemize they couldn't systemize	I couldn't be systemizing you couldn't be systemizing she couldn't be systemizing we couldn't be systemizing you couldn't be systemizing they couldn't be systemizing
Perfect	V-ing perfect
I couldn't have systemized you couldn't have systemized she couldn't have systemized we couldn't have systemized you couldn't have systemized they couldn't have systemized	I couldn't have been systemizing you couldn't have been systemizing she couldn't have been systemizing we couldn't have been systemizing you couldn't have been systemizing they couldn't have been systemizing

Interrogative form

Simple form	V-ing form
could I systemize? could you systemize? could she systemize? could we systemize? could you systemize? could they systemize?	could I be systemizing? could you be systemizing? could she be systemizing? could we be systemizing? could you be systemizing? could they be systemizing?
Perfect	V-ing perfect
could I have systemized? could you have systemized? could she have systemized? could we have systemized? could you have systemized? could they have systemized?	could I have been systemizing? could you have been systemizing? could she have been systemizing? could we have been systemizing? could you have been systemizing? could they have been systemizing?

Interro-negative form

Simple form	V-ing form
couldn't I systemize? couldn't you systemize? couldn't she systemize? couldn't we systemize? couldn't you systemize? couldn't they systemize?	couldn't I be systemizing? couldn't you be systemizing? couldn't she be systemizing? couldn't we be systemizing? couldn't you be systemizing? couldn't they be systemizing?
Perfect	V-ing perfect
couldn't I have systemized? couldn't you have systemized? couldn't she have systemized? couldn't we have systemized? couldn't you have systemized? couldn't they have systemized?	couldn't I have been systemizing? couldn't you have been systemizing? couldn't she have been systemizing? couldn't we have been systemizing? couldn't you have been systemizing? couldn't they have been systemizing?