can ladder
Verbo regular: ladder - laddered- laddered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can ladder
you can ladder
he can ladder
we can ladder
you can ladder
they can ladder 	I can be laddering
you can be laddering
he can be laddering
we can be laddering
you can be laddering
they can be laddering	I can have laddered
you can have laddered
he can have laddered
we can have laddered
you can have laddered
they can have laddered	I can have been laddering
you can have been laddering
he can have been laddering
we can have been laddering
you can have been laddering
they can have been laddering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot ladder
you cannot ladder
he cannot ladder
we cannot ladder
you cannot ladder
they cannot ladder 	I cannot be laddering
you cannot be laddering
he cannot be laddering
we cannot be laddering
you cannot be laddering
they cannot be laddering	I cannot have laddered
you cannot have laddered
he cannot have laddered
we cannot have laddered
you cannot have laddered
they cannot have laddered	I cannot have been laddering
you cannot have been laddering
he cannot have been laddering
we cannot have been laddering
you cannot have been laddering
they cannot have been laddering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I ladder?
can you ladder?
can he ladder?
can we ladder?
can you ladder?
can they ladder? 	can I be laddering?
can you be laddering?
can he be laddering?
can we be laddering?
can you be laddering?
can they be laddering? 	can I have laddered?
can you have laddered?
can he have laddered?
can we have laddered?
can you have laddered?
can they have laddered? 	can I have been laddering?
can you have been laddering?
can he have been laddering?
can we have been laddering?
can you have been laddering?
can they have been laddering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not ladder?
can you not ladder?
can he not ladder?
can we not ladder?
can you not ladder?
can they not ladder? 	can I not be laddering?
can you not be laddering?
can he not be laddering?
can we not be laddering?
can you not be laddering?
can they not be laddering? 	can I not have laddered?
can you not have laddered?
can he not have laddered?
can we not have laddered?
can you not have laddered?
can they not have laddered? 	can I not have been laddering?
can you not have been laddering?
can he not have been laddering?
can we not have been laddering?
can you not have been laddering?
can they not have been laddering?