English verb conjugation COULD PRECHECK

Regular verb: precheck - prechecked - prechecked

Affirmation

Simple form

I could precheck
you could precheck
she could precheck
we could precheck
you could precheck
they could precheck

V-ing form

I could be prechecking
you could be prechecking
she could be prechecking
we could be prechecking
you could be prechecking
they could be prechecking

Perfect

I could have prechecked
you could have prechecked
she could have prechecked
we could have prechecked
you could have prechecked
they could have prechecked

V-ing perfect

I could have been prechecking
you could have been prechecking
she could have been prechecking
we could have been prechecking
you could have been prechecking
they could have been prechecking

Negation

Simple form

I could not precheck
you could not precheck
she could not precheck
we could not precheck
you could not precheck
they could not precheck

V-ing form

I could not be prechecking
you could not be prechecking
she could not be prechecking
we could not be prechecking
you could not be prechecking
they could not be prechecking

Perfect

I could not have prechecked
you could not have prechecked
she could not have prechecked
we could not have prechecked
you could not have prechecked
they could not have prechecked

V-ing perfect

I could not have been prechecking
you could not have been prechecking
she could not have been prechecking
we could not have been prechecking
you could not have been prechecking
they could not have been prechecking

Interrogative form

Simple form

could I precheck?
could you precheck?
could she precheck?
could we precheck?
could you precheck?
could they precheck?

V-ing form

could I be prechecking?
could you be prechecking?
could she be prechecking?
could we be prechecking?
could you be prechecking?
could they be prechecking?

Perfect

could I have prechecked?
could you have prechecked?
could she have prechecked?
could we have prechecked?
could you have prechecked?
could they have prechecked?

V-ing perfect

could I have been prechecking?
could you have been prechecking?
could she have been prechecking?
could we have been prechecking?
could you have been prechecking?
could they have been prechecking?

Interro-negative form

Simple form

could I not precheck?
could you not precheck?
could she not precheck?
could we not precheck?
could you not precheck?
could they not precheck?

V-ing form

could I not be prechecking?
could you not be prechecking?
could she not be prechecking?
could we not be prechecking?
could you not be prechecking?
could they not be prechecking?

Perfect

could I not have prechecked?
could you not have prechecked?
could she not have prechecked?
could we not have prechecked?
could you not have prechecked?
could they not have prechecked?

V-ing perfect

could I not have been prechecking?
could you not have been prechecking?
could she not have been prechecking?
could we not have been prechecking?
could you not have been prechecking?
could they not have been prechecking?

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