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 can't soften
you can't soften
she can't soften
we can't soften
you can't soften
they can't soften 	I can't be softening
you can't be softening
she can't be softening
we can't be softening
you can't be softening
they can't be softening	I can't have softened
you can't have softened
she can't have softened
we can't have softened
you can't have softened
they can't have softened	I can't have been softening
you can't have been softening
she can't have been softening
we can't have been softening
you can't have been softening
they can't 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't I soften?
can't you soften?
can't she soften?
can't we soften?
can't you soften?
can't they soften? 	can't I be softening?
can't you be softening?
can't she be softening?
can't we be softening?
can't you be softening?
can't they be softening? 	can't I have softened?
can't you have softened?
can't she have softened?
can't we have softened?
can't you have softened?
can't they have softened? 	can't I have been softening?
can't you have been softening?
can't she have been softening?
can't we have been softening?
can't you have been softening?
can't they have been softening?