can falsify
Verbo regular: falsify - falsified- falsified

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can falsify
you can falsify
she can falsify
we can falsify
you can falsify
they can falsify 	I can be falsifying
you can be falsifying
she can be falsifying
we can be falsifying
you can be falsifying
they can be falsifying	I can have falsified
you can have falsified
she can have falsified
we can have falsified
you can have falsified
they can have falsified	I can have been falsifying
you can have been falsifying
she can have been falsifying
we can have been falsifying
you can have been falsifying
they can have been falsifying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot falsify
you cannot falsify
she cannot falsify
we cannot falsify
you cannot falsify
they cannot falsify 	I cannot be falsifying
you cannot be falsifying
she cannot be falsifying
we cannot be falsifying
you cannot be falsifying
they cannot be falsifying	I cannot have falsified
you cannot have falsified
she cannot have falsified
we cannot have falsified
you cannot have falsified
they cannot have falsified	I cannot have been falsifying
you cannot have been falsifying
she cannot have been falsifying
we cannot have been falsifying
you cannot have been falsifying
they cannot have been falsifying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I falsify?
can you falsify?
can she falsify?
can we falsify?
can you falsify?
can they falsify? 	can I be falsifying?
can you be falsifying?
can she be falsifying?
can we be falsifying?
can you be falsifying?
can they be falsifying? 	can I have falsified?
can you have falsified?
can she have falsified?
can we have falsified?
can you have falsified?
can they have falsified? 	can I have been falsifying?
can you have been falsifying?
can she have been falsifying?
can we have been falsifying?
can you have been falsifying?
can they have been falsifying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not falsify?
can you not falsify?
can she not falsify?
can we not falsify?
can you not falsify?
can they not falsify? 	can I not be falsifying?
can you not be falsifying?
can she not be falsifying?
can we not be falsifying?
can you not be falsifying?
can they not be falsifying? 	can I not have falsified?
can you not have falsified?
can she not have falsified?
can we not have falsified?
can you not have falsified?
can they not have falsified? 	can I not have been falsifying?
can you not have been falsifying?
can she not have been falsifying?
can we not have been falsifying?
can you not have been falsifying?
can they not have been falsifying?