must surrogate
Verbo regular: surrogate - surrogated- surrogated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must surrogate
you must surrogate
he must surrogate
we must surrogate
you must surrogate
they must surrogate 	I must be surrogating
you must be surrogating
he must be surrogating
we must be surrogating
you must be surrogating
they must be surrogating	I must have surrogated
you must have surrogated
he must have surrogated
we must have surrogated
you must have surrogated
they must have surrogated	I must have been surrogating
you must have been surrogating
he must have been surrogating
we must have been surrogating
you must have been surrogating
they must have been surrogating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not surrogate
you must not surrogate
he must not surrogate
we must not surrogate
you must not surrogate
they must not surrogate 	I must not be surrogating
you must not be surrogating
he must not be surrogating
we must not be surrogating
you must not be surrogating
they must not be surrogating	I must not have surrogated
you must not have surrogated
he must not have surrogated
we must not have surrogated
you must not have surrogated
they must not have surrogated	I must not have been surrogating
you must not have been surrogating
he must not have been surrogating
we must not have been surrogating
you must not have been surrogating
they must not have been surrogating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I surrogate?
must you surrogate?
must he surrogate?
must we surrogate?
must you surrogate?
must they surrogate? 	must I be surrogating?
must you be surrogating?
must he be surrogating?
must we be surrogating?
must you be surrogating?
must they be surrogating? 	must I have surrogated?
must you have surrogated?
must he have surrogated?
must we have surrogated?
must you have surrogated?
must they have surrogated? 	must I have been surrogating?
must you have been surrogating?
must he have been surrogating?
must we have been surrogating?
must you have been surrogating?
must they have been surrogating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not surrogate?
must you not surrogate?
must he not surrogate?
must we not surrogate?
must you not surrogate?
must they not surrogate? 	must I not be surrogating?
must you not be surrogating?
must he not be surrogating?
must we not be surrogating?
must you not be surrogating?
must they not be surrogating? 	must I not have surrogated?
must you not have surrogated?
must he not have surrogated?
must we not have surrogated?
must you not have surrogated?
must they not have surrogated? 	must I not have been surrogating?
must you not have been surrogating?
must he not have been surrogating?
must we not have been surrogating?
must you not have been surrogating?
must they not have been surrogating?