can lessen
Verbo regular: lessen - lessened- lessened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I can lessen
you can lessen
he can lessen
we can lessen
you can lessen
they can lessen 	I can be lessening
you can be lessening
he can be lessening
we can be lessening
you can be lessening
they can be lessening	I can have lessened
you can have lessened
he can have lessened
we can have lessened
you can have lessened
they can have lessened	I can have been lessening
you can have been lessening
he can have been lessening
we can have been lessening
you can have been lessening
they can have been lessening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I cannot lessen
you cannot lessen
he cannot lessen
we cannot lessen
you cannot lessen
they cannot lessen 	I cannot be lessening
you cannot be lessening
he cannot be lessening
we cannot be lessening
you cannot be lessening
they cannot be lessening	I cannot have lessened
you cannot have lessened
he cannot have lessened
we cannot have lessened
you cannot have lessened
they cannot have lessened	I cannot have been lessening
you cannot have been lessening
he cannot have been lessening
we cannot have been lessening
you cannot have been lessening
they cannot have been lessening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I lessen?
can you lessen?
can he lessen?
can we lessen?
can you lessen?
can they lessen? 	can I be lessening?
can you be lessening?
can he be lessening?
can we be lessening?
can you be lessening?
can they be lessening? 	can I have lessened?
can you have lessened?
can he have lessened?
can we have lessened?
can you have lessened?
can they have lessened? 	can I have been lessening?
can you have been lessening?
can he have been lessening?
can we have been lessening?
can you have been lessening?
can they have been lessening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
can I not lessen?
can you not lessen?
can he not lessen?
can we not lessen?
can you not lessen?
can they not lessen? 	can I not be lessening?
can you not be lessening?
can he not be lessening?
can we not be lessening?
can you not be lessening?
can they not be lessening? 	can I not have lessened?
can you not have lessened?
can he not have lessened?
can we not have lessened?
can you not have lessened?
can they not have lessened? 	can I not have been lessening?
can you not have been lessening?
can he not have been lessening?
can we not have been lessening?
can you not have been lessening?
can they not have been lessening?