must steepen
Verbo regular: steepen - steepened- steepened

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must steepen
you must steepen
he must steepen
we must steepen
you must steepen
they must steepen 	I must be steepening
you must be steepening
he must be steepening
we must be steepening
you must be steepening
they must be steepening	I must have steepened
you must have steepened
he must have steepened
we must have steepened
you must have steepened
they must have steepened	I must have been steepening
you must have been steepening
he must have been steepening
we must have been steepening
you must have been steepening
they must have been steepening	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not steepen
you must not steepen
he must not steepen
we must not steepen
you must not steepen
they must not steepen 	I must not be steepening
you must not be steepening
he must not be steepening
we must not be steepening
you must not be steepening
they must not be steepening	I must not have steepened
you must not have steepened
he must not have steepened
we must not have steepened
you must not have steepened
they must not have steepened	I must not have been steepening
you must not have been steepening
he must not have been steepening
we must not have been steepening
you must not have been steepening
they must not have been steepening	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I steepen?
must you steepen?
must he steepen?
must we steepen?
must you steepen?
must they steepen? 	must I be steepening?
must you be steepening?
must he be steepening?
must we be steepening?
must you be steepening?
must they be steepening? 	must I have steepened?
must you have steepened?
must he have steepened?
must we have steepened?
must you have steepened?
must they have steepened? 	must I have been steepening?
must you have been steepening?
must he have been steepening?
must we have been steepening?
must you have been steepening?
must they have been steepening? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not steepen?
must you not steepen?
must he not steepen?
must we not steepen?
must you not steepen?
must they not steepen? 	must I not be steepening?
must you not be steepening?
must he not be steepening?
must we not be steepening?
must you not be steepening?
must they not be steepening? 	must I not have steepened?
must you not have steepened?
must he not have steepened?
must we not have steepened?
must you not have steepened?
must they not have steepened? 	must I not have been steepening?
must you not have been steepening?
must he not have been steepening?
must we not have been steepening?
must you not have been steepening?
must they not have been steepening?