should invoice
Verbo regular: invoice - invoiced- invoiced

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should invoice
you should invoice
he should invoice
we should invoice
you should invoice
they should invoice 	I should be invoicing
you should be invoicing
he should be invoicing
we should be invoicing
you should be invoicing
they should be invoicing	I should have invoiced
you should have invoiced
he should have invoiced
we should have invoiced
you should have invoiced
they should have invoiced	I should have been invoicing
you should have been invoicing
he should have been invoicing
we should have been invoicing
you should have been invoicing
they should have been invoicing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I should not invoice
you should not invoice
he should not invoice
we should not invoice
you should not invoice
they should not invoice 	I should not be invoicing
you should not be invoicing
he should not be invoicing
we should not be invoicing
you should not be invoicing
they should not be invoicing	I should not have invoiced
you should not have invoiced
he should not have invoiced
we should not have invoiced
you should not have invoiced
they should not have invoiced	I should not have been invoicing
you should not have been invoicing
he should not have been invoicing
we should not have been invoicing
you should not have been invoicing
they should not have been invoicing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I invoice?
should you invoice?
should he invoice?
should we invoice?
should you invoice?
should they invoice? 	should I be invoicing?
should you be invoicing?
should he be invoicing?
should we be invoicing?
should you be invoicing?
should they be invoicing? 	should I have invoiced?
should you have invoiced?
should he have invoiced?
should we have invoiced?
should you have invoiced?
should they have invoiced? 	should I have been invoicing?
should you have been invoicing?
should he have been invoicing?
should we have been invoicing?
should you have been invoicing?
should they have been invoicing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I not invoice?
should you not invoice?
should he not invoice?
should we not invoice?
should you not invoice?
should they not invoice? 	should I not be invoicing?
should you not be invoicing?
should he not be invoicing?
should we not be invoicing?
should you not be invoicing?
should they not be invoicing? 	should I not have invoiced?
should you not have invoiced?
should he not have invoiced?
should we not have invoiced?
should you not have invoiced?
should they not have invoiced? 	should I not have been invoicing?
should you not have been invoicing?
should he not have been invoicing?
should we not have been invoicing?
should you not have been invoicing?
should they not have been invoicing?