can overbill
Verbo regular: overbill - overbilled- overbilled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can overbill
you can overbill
he can overbill
we can overbill
you can overbill
they can overbill 	I can be overbilling
you can be overbilling
he can be overbilling
we can be overbilling
you can be overbilling
they can be overbilling	I can have overbilled
you can have overbilled
he can have overbilled
we can have overbilled
you can have overbilled
they can have overbilled	I can have been overbilling
you can have been overbilling
he can have been overbilling
we can have been overbilling
you can have been overbilling
they can have been overbilling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot overbill
you cannot overbill
he cannot overbill
we cannot overbill
you cannot overbill
they cannot overbill 	I cannot be overbilling
you cannot be overbilling
he cannot be overbilling
we cannot be overbilling
you cannot be overbilling
they cannot be overbilling	I cannot have overbilled
you cannot have overbilled
he cannot have overbilled
we cannot have overbilled
you cannot have overbilled
they cannot have overbilled	I cannot have been overbilling
you cannot have been overbilling
he cannot have been overbilling
we cannot have been overbilling
you cannot have been overbilling
they cannot have been overbilling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I overbill?
can you overbill?
can he overbill?
can we overbill?
can you overbill?
can they overbill? 	can I be overbilling?
can you be overbilling?
can he be overbilling?
can we be overbilling?
can you be overbilling?
can they be overbilling? 	can I have overbilled?
can you have overbilled?
can he have overbilled?
can we have overbilled?
can you have overbilled?
can they have overbilled? 	can I have been overbilling?
can you have been overbilling?
can he have been overbilling?
can we have been overbilling?
can you have been overbilling?
can they have been overbilling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not overbill?
can you not overbill?
can he not overbill?
can we not overbill?
can you not overbill?
can they not overbill? 	can I not be overbilling?
can you not be overbilling?
can he not be overbilling?
can we not be overbilling?
can you not be overbilling?
can they not be overbilling? 	can I not have overbilled?
can you not have overbilled?
can he not have overbilled?
can we not have overbilled?
can you not have overbilled?
can they not have overbilled? 	can I not have been overbilling?
can you not have been overbilling?
can he not have been overbilling?
can we not have been overbilling?
can you not have been overbilling?
can they not have been overbilling?