can steepen
Regular verb: steepen - steepened- steepened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can steepen
you can steepen
she can steepen
we can steepen
you can steepen
they can steepen 	I can be steepening
you can be steepening
she can be steepening
we can be steepening
you can be steepening
they can be steepening	I can have steepened
you can have steepened
she can have steepened
we can have steepened
you can have steepened
they can have steepened	I can have been steepening
you can have been steepening
she can have been steepening
we can have been steepening
you can have been steepening
they can have been steepening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't steepen
you can't steepen
she can't steepen
we can't steepen
you can't steepen
they can't steepen 	I can't be steepening
you can't be steepening
she can't be steepening
we can't be steepening
you can't be steepening
they can't be steepening	I can't have steepened
you can't have steepened
she can't have steepened
we can't have steepened
you can't have steepened
they can't have steepened	I can't have been steepening
you can't have been steepening
she can't have been steepening
we can't have been steepening
you can't have been steepening
they can't have been steepening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I steepen?
can you steepen?
can she steepen?
can we steepen?
can you steepen?
can they steepen? 	can I be steepening?
can you be steepening?
can she be steepening?
can we be steepening?
can you be steepening?
can they be steepening? 	can I have steepened?
can you have steepened?
can she have steepened?
can we have steepened?
can you have steepened?
can they have steepened? 	can I have been steepening?
can you have been steepening?
can she have been steepening?
can we have been steepening?
can you have been steepening?
can they have been steepening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I steepen?
can't you steepen?
can't she steepen?
can't we steepen?
can't you steepen?
can't they steepen? 	can't I be steepening?
can't you be steepening?
can't she be steepening?
can't we be steepening?
can't you be steepening?
can't they be steepening? 	can't I have steepened?
can't you have steepened?
can't she have steepened?
can't we have steepened?
can't you have steepened?
can't they have steepened? 	can't I have been steepening?
can't you have been steepening?
can't she have been steepening?
can't we have been steepening?
can't you have been steepening?
can't they have been steepening?