can soften
Regular verb: soften - softened- softened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can soften
you can soften
he can soften
we can soften
you can soften
they can soften 	I can be softening
you can be softening
he can be softening
we can be softening
you can be softening
they can be softening	I can have softened
you can have softened
he 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
he 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
he 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
he 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
he 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
he 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 he soften?
can we soften?
can you soften?
can they soften? 	can I be softening?
can you be softening?
can he be softening?
can we be softening?
can you be softening?
can they be softening? 	can I have softened?
can you have softened?
can he 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 he 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 he 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 he 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 he 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 he have been softening?
can't we have been softening?
can't you have been softening?
can't they have been softening?