English verb conjugation COULD INVOICE

Regular verb: invoice - invoiced - invoiced

Affirmation

Simple form

I could invoice
you could invoice
he could invoice
we could invoice
you could invoice
they could invoice

V-ing form

I could be invoicing
you could be invoicing
he could be invoicing
we could be invoicing
you could be invoicing
they could be invoicing

Perfect

I could have invoiced
you could have invoiced
he could have invoiced
we could have invoiced
you could have invoiced
they could have invoiced

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I invoice?
could you invoice?
could he invoice?
could we invoice?
could you invoice?
could they invoice?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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