can stamp
Verbo regular: stamp - stamped- stamped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can stamp
you can stamp
he can stamp
we can stamp
you can stamp
they can stamp 	I can be stamping
you can be stamping
he can be stamping
we can be stamping
you can be stamping
they can be stamping	I can have stamped
you can have stamped
he can have stamped
we can have stamped
you can have stamped
they can have stamped	I can have been stamping
you can have been stamping
he can have been stamping
we can have been stamping
you can have been stamping
they can have been stamping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot stamp
you cannot stamp
he cannot stamp
we cannot stamp
you cannot stamp
they cannot stamp 	I cannot be stamping
you cannot be stamping
he cannot be stamping
we cannot be stamping
you cannot be stamping
they cannot be stamping	I cannot have stamped
you cannot have stamped
he cannot have stamped
we cannot have stamped
you cannot have stamped
they cannot have stamped	I cannot have been stamping
you cannot have been stamping
he cannot have been stamping
we cannot have been stamping
you cannot have been stamping
they cannot have been stamping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I stamp?
can you stamp?
can he stamp?
can we stamp?
can you stamp?
can they stamp? 	can I be stamping?
can you be stamping?
can he be stamping?
can we be stamping?
can you be stamping?
can they be stamping? 	can I have stamped?
can you have stamped?
can he have stamped?
can we have stamped?
can you have stamped?
can they have stamped? 	can I have been stamping?
can you have been stamping?
can he have been stamping?
can we have been stamping?
can you have been stamping?
can they have been stamping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not stamp?
can you not stamp?
can he not stamp?
can we not stamp?
can you not stamp?
can they not stamp? 	can I not be stamping?
can you not be stamping?
can he not be stamping?
can we not be stamping?
can you not be stamping?
can they not be stamping? 	can I not have stamped?
can you not have stamped?
can he not have stamped?
can we not have stamped?
can you not have stamped?
can they not have stamped? 	can I not have been stamping?
can you not have been stamping?
can he not have been stamping?
can we not have been stamping?
can you not have been stamping?
can they not have been stamping?