English verb conjugation COULD INTERFILE

Regular verb: interfile - interfiled - interfiled

Affirmation

Simple form

I could interfile
you could interfile
he could interfile
we could interfile
you could interfile
they could interfile

V-ing form

I could be interfiling
you could be interfiling
he could be interfiling
we could be interfiling
you could be interfiling
they could be interfiling

Perfect

I could have interfiled
you could have interfiled
he could have interfiled
we could have interfiled
you could have interfiled
they could have interfiled

V-ing perfect

I could have been interfiling
you could have been interfiling
he could have been interfiling
we could have been interfiling
you could have been interfiling
they could have been interfiling

Negation

Simple form

I couldn't interfile
you couldn't interfile
he couldn't interfile
we couldn't interfile
you couldn't interfile
they couldn't interfile

V-ing form

I couldn't be interfiling
you couldn't be interfiling
he couldn't be interfiling
we couldn't be interfiling
you couldn't be interfiling
they couldn't be interfiling

Perfect

I couldn't have interfiled
you couldn't have interfiled
he couldn't have interfiled
we couldn't have interfiled
you couldn't have interfiled
they couldn't have interfiled

V-ing perfect

I couldn't have been interfiling
you couldn't have been interfiling
he couldn't have been interfiling
we couldn't have been interfiling
you couldn't have been interfiling
they couldn't have been interfiling

Interrogative form

Simple form

could I interfile?
could you interfile?
could he interfile?
could we interfile?
could you interfile?
could they interfile?

V-ing form

could I be interfiling?
could you be interfiling?
could he be interfiling?
could we be interfiling?
could you be interfiling?
could they be interfiling?

Perfect

could I have interfiled?
could you have interfiled?
could he have interfiled?
could we have interfiled?
could you have interfiled?
could they have interfiled?

V-ing perfect

could I have been interfiling?
could you have been interfiling?
could he have been interfiling?
could we have been interfiling?
could you have been interfiling?
could they have been interfiling?

Interro-negative form

Simple form

couldn't I interfile?
couldn't you interfile?
couldn't he interfile?
couldn't we interfile?
couldn't you interfile?
couldn't they interfile?

V-ing form

couldn't I be interfiling?
couldn't you be interfiling?
couldn't he be interfiling?
couldn't we be interfiling?
couldn't you be interfiling?
couldn't they be interfiling?

Perfect

couldn't I have interfiled?
couldn't you have interfiled?
couldn't he have interfiled?
couldn't we have interfiled?
couldn't you have interfiled?
couldn't they have interfiled?

V-ing perfect

couldn't I have been interfiling?
couldn't you have been interfiling?
couldn't he have been interfiling?
couldn't we have been interfiling?
couldn't you have been interfiling?
couldn't they have been interfiling?

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