can soften
Regular verb: soften - softened- softened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can soften
you can soften
she can soften
we can soften
you can soften
they can soften 	I can be softening
you can be softening
she can be softening
we can be softening
you can be softening
they can be softening	I can have softened
you can have softened
she can have softened
we can have softened
you can have softened
they can have softened	I can have been softening
you can have been softening
she can have been softening
we can have been softening
you can have been softening
they can have been softening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot soften
you cannot soften
she cannot soften
we cannot soften
you cannot soften
they cannot soften 	I cannot be softening
you cannot be softening
she cannot be softening
we cannot be softening
you cannot be softening
they cannot be softening	I cannot have softened
you cannot have softened
she cannot have softened
we cannot have softened
you cannot have softened
they cannot have softened	I cannot have been softening
you cannot have been softening
she cannot have been softening
we cannot have been softening
you cannot have been softening
they cannot have been softening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I soften?
can you soften?
can she soften?
can we soften?
can you soften?
can they soften? 	can I be softening?
can you be softening?
can she be softening?
can we be softening?
can you be softening?
can they be softening? 	can I have softened?
can you have softened?
can she have softened?
can we have softened?
can you have softened?
can they have softened? 	can I have been softening?
can you have been softening?
can she have been softening?
can we have been softening?
can you have been softening?
can they have been softening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not soften?
can you not soften?
can she not soften?
can we not soften?
can you not soften?
can they not soften? 	can I not be softening?
can you not be softening?
can she not be softening?
can we not be softening?
can you not be softening?
can they not be softening? 	can I not have softened?
can you not have softened?
can she not have softened?
can we not have softened?
can you not have softened?
can they not have softened? 	can I not have been softening?
can you not have been softening?
can she not have been softening?
can we not have been softening?
can you not have been softening?
can they not have been softening?