could subtotal
Verbo regular: subtotal - subtotaled- subtotaled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could subtotal
you could subtotal
she could subtotal
we could subtotal
you could subtotal
they could subtotal 	I could be subtotaling
you could be subtotaling
she could be subtotaling
we could be subtotaling
you could be subtotaling
they could be subtotaling	I could have subtotaled
you could have subtotaled
she could have subtotaled
we could have subtotaled
you could have subtotaled
they could have subtotaled	I could have been subtotaling
you could have been subtotaling
she could have been subtotaling
we could have been subtotaling
you could have been subtotaling
they could have been subtotaling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not subtotal
you could not subtotal
she could not subtotal
we could not subtotal
you could not subtotal
they could not subtotal 	I could not be subtotaling
you could not be subtotaling
she could not be subtotaling
we could not be subtotaling
you could not be subtotaling
they could not be subtotaling	I could not have subtotaled
you could not have subtotaled
she could not have subtotaled
we could not have subtotaled
you could not have subtotaled
they could not have subtotaled	I could not have been subtotaling
you could not have been subtotaling
she could not have been subtotaling
we could not have been subtotaling
you could not have been subtotaling
they could not have been subtotaling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I subtotal?
could you subtotal?
could she subtotal?
could we subtotal?
could you subtotal?
could they subtotal? 	could I be subtotaling?
could you be subtotaling?
could she be subtotaling?
could we be subtotaling?
could you be subtotaling?
could they be subtotaling? 	could I have subtotaled?
could you have subtotaled?
could she have subtotaled?
could we have subtotaled?
could you have subtotaled?
could they have subtotaled? 	could I have been subtotaling?
could you have been subtotaling?
could she have been subtotaling?
could we have been subtotaling?
could you have been subtotaling?
could they have been subtotaling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not subtotal?
could you not subtotal?
could she not subtotal?
could we not subtotal?
could you not subtotal?
could they not subtotal? 	could I not be subtotaling?
could you not be subtotaling?
could she not be subtotaling?
could we not be subtotaling?
could you not be subtotaling?
could they not be subtotaling? 	could I not have subtotaled?
could you not have subtotaled?
could she not have subtotaled?
could we not have subtotaled?
could you not have subtotaled?
could they not have subtotaled? 	could I not have been subtotaling?
could you not have been subtotaling?
could she not have been subtotaling?
could we not have been subtotaling?
could you not have been subtotaling?
could they not have been subtotaling?