English verb conjugation COULD HIGH-GRADE

Regular verb: high-grade - high-graded - high-graded

Affirmation

Simple form

I could high-grade
you could high-grade
he could high-grade
we could high-grade
you could high-grade
they could high-grade

V-ing form

I could be high-grading
you could be high-grading
he could be high-grading
we could be high-grading
you could be high-grading
they could be high-grading

Perfect

I could have high-graded
you could have high-graded
he could have high-graded
we could have high-graded
you could have high-graded
they could have high-graded

V-ing perfect

I could have been high-grading
you could have been high-grading
he could have been high-grading
we could have been high-grading
you could have been high-grading
they could have been high-grading

Negation

Simple form

I couldn't high-grade
you couldn't high-grade
he couldn't high-grade
we couldn't high-grade
you couldn't high-grade
they couldn't high-grade

V-ing form

I couldn't be high-grading
you couldn't be high-grading
he couldn't be high-grading
we couldn't be high-grading
you couldn't be high-grading
they couldn't be high-grading

Perfect

I couldn't have high-graded
you couldn't have high-graded
he couldn't have high-graded
we couldn't have high-graded
you couldn't have high-graded
they couldn't have high-graded

V-ing perfect

I couldn't have been high-grading
you couldn't have been high-grading
he couldn't have been high-grading
we couldn't have been high-grading
you couldn't have been high-grading
they couldn't have been high-grading

Interrogative form

Simple form

could I high-grade?
could you high-grade?
could he high-grade?
could we high-grade?
could you high-grade?
could they high-grade?

V-ing form

could I be high-grading?
could you be high-grading?
could he be high-grading?
could we be high-grading?
could you be high-grading?
could they be high-grading?

Perfect

could I have high-graded?
could you have high-graded?
could he have high-graded?
could we have high-graded?
could you have high-graded?
could they have high-graded?

V-ing perfect

could I have been high-grading?
could you have been high-grading?
could he have been high-grading?
could we have been high-grading?
could you have been high-grading?
could they have been high-grading?

Interro-negative form

Simple form

couldn't I high-grade?
couldn't you high-grade?
couldn't he high-grade?
couldn't we high-grade?
couldn't you high-grade?
couldn't they high-grade?

V-ing form

couldn't I be high-grading?
couldn't you be high-grading?
couldn't he be high-grading?
couldn't we be high-grading?
couldn't you be high-grading?
couldn't they be high-grading?

Perfect

couldn't I have high-graded?
couldn't you have high-graded?
couldn't he have high-graded?
couldn't we have high-graded?
couldn't you have high-graded?
couldn't they have high-graded?

V-ing perfect

couldn't I have been high-grading?
couldn't you have been high-grading?
couldn't he have been high-grading?
couldn't we have been high-grading?
couldn't you have been high-grading?
couldn't they have been high-grading?

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