must contend
Verbo regular: contend - contended- contended

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must contend
you must contend
she must contend
we must contend
you must contend
they must contend 	I must be contending
you must be contending
she must be contending
we must be contending
you must be contending
they must be contending	I must have contended
you must have contended
she must have contended
we must have contended
you must have contended
they must have contended	I must have been contending
you must have been contending
she must have been contending
we must have been contending
you must have been contending
they must have been contending	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not contend
you must not contend
she must not contend
we must not contend
you must not contend
they must not contend 	I must not be contending
you must not be contending
she must not be contending
we must not be contending
you must not be contending
they must not be contending	I must not have contended
you must not have contended
she must not have contended
we must not have contended
you must not have contended
they must not have contended	I must not have been contending
you must not have been contending
she must not have been contending
we must not have been contending
you must not have been contending
they must not have been contending	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I contend?
must you contend?
must she contend?
must we contend?
must you contend?
must they contend? 	must I be contending?
must you be contending?
must she be contending?
must we be contending?
must you be contending?
must they be contending? 	must I have contended?
must you have contended?
must she have contended?
must we have contended?
must you have contended?
must they have contended? 	must I have been contending?
must you have been contending?
must she have been contending?
must we have been contending?
must you have been contending?
must they have been contending? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not contend?
must you not contend?
must she not contend?
must we not contend?
must you not contend?
must they not contend? 	must I not be contending?
must you not be contending?
must she not be contending?
must we not be contending?
must you not be contending?
must they not be contending? 	must I not have contended?
must you not have contended?
must she not have contended?
must we not have contended?
must you not have contended?
must they not have contended? 	must I not have been contending?
must you not have been contending?
must she not have been contending?
must we not have been contending?
must you not have been contending?
must they not have been contending?