can testify
Verbo regular: testify - testified- testified

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can testify
you can testify
she can testify
we can testify
you can testify
they can testify 	I can be testifying
you can be testifying
she can be testifying
we can be testifying
you can be testifying
they can be testifying	I can have testified
you can have testified
she can have testified
we can have testified
you can have testified
they can have testified	I can have been testifying
you can have been testifying
she can have been testifying
we can have been testifying
you can have been testifying
they can have been testifying	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot testify
you cannot testify
she cannot testify
we cannot testify
you cannot testify
they cannot testify 	I cannot be testifying
you cannot be testifying
she cannot be testifying
we cannot be testifying
you cannot be testifying
they cannot be testifying	I cannot have testified
you cannot have testified
she cannot have testified
we cannot have testified
you cannot have testified
they cannot have testified	I cannot have been testifying
you cannot have been testifying
she cannot have been testifying
we cannot have been testifying
you cannot have been testifying
they cannot have been testifying	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I testify?
can you testify?
can she testify?
can we testify?
can you testify?
can they testify? 	can I be testifying?
can you be testifying?
can she be testifying?
can we be testifying?
can you be testifying?
can they be testifying? 	can I have testified?
can you have testified?
can she have testified?
can we have testified?
can you have testified?
can they have testified? 	can I have been testifying?
can you have been testifying?
can she have been testifying?
can we have been testifying?
can you have been testifying?
can they have been testifying? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not testify?
can you not testify?
can she not testify?
can we not testify?
can you not testify?
can they not testify? 	can I not be testifying?
can you not be testifying?
can she not be testifying?
can we not be testifying?
can you not be testifying?
can they not be testifying? 	can I not have testified?
can you not have testified?
can she not have testified?
can we not have testified?
can you not have testified?
can they not have testified? 	can I not have been testifying?
can you not have been testifying?
can she not have been testifying?
can we not have been testifying?
can you not have been testifying?
can they not have been testifying?