can falter
Verbo regular: falter - faltered- faltered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can falter
you can falter
he can falter
we can falter
you can falter
they can falter 	I can be faltering
you can be faltering
he can be faltering
we can be faltering
you can be faltering
they can be faltering	I can have faltered
you can have faltered
he can have faltered
we can have faltered
you can have faltered
they can have faltered	I can have been faltering
you can have been faltering
he can have been faltering
we can have been faltering
you can have been faltering
they can have been faltering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot falter
you cannot falter
he cannot falter
we cannot falter
you cannot falter
they cannot falter 	I cannot be faltering
you cannot be faltering
he cannot be faltering
we cannot be faltering
you cannot be faltering
they cannot be faltering	I cannot have faltered
you cannot have faltered
he cannot have faltered
we cannot have faltered
you cannot have faltered
they cannot have faltered	I cannot have been faltering
you cannot have been faltering
he cannot have been faltering
we cannot have been faltering
you cannot have been faltering
they cannot have been faltering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I falter?
can you falter?
can he falter?
can we falter?
can you falter?
can they falter? 	can I be faltering?
can you be faltering?
can he be faltering?
can we be faltering?
can you be faltering?
can they be faltering? 	can I have faltered?
can you have faltered?
can he have faltered?
can we have faltered?
can you have faltered?
can they have faltered? 	can I have been faltering?
can you have been faltering?
can he have been faltering?
can we have been faltering?
can you have been faltering?
can they have been faltering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not falter?
can you not falter?
can he not falter?
can we not falter?
can you not falter?
can they not falter? 	can I not be faltering?
can you not be faltering?
can he not be faltering?
can we not be faltering?
can you not be faltering?
can they not be faltering? 	can I not have faltered?
can you not have faltered?
can he not have faltered?
can we not have faltered?
can you not have faltered?
can they not have faltered? 	can I not have been faltering?
can you not have been faltering?
can he not have been faltering?
can we not have been faltering?
can you not have been faltering?
can they not have been faltering?