must perpend
Verbo regular: perpend - perpended- perpended

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must perpend
you must perpend
he must perpend
we must perpend
you must perpend
they must perpend 	I must be perpending
you must be perpending
he must be perpending
we must be perpending
you must be perpending
they must be perpending	I must have perpended
you must have perpended
he must have perpended
we must have perpended
you must have perpended
they must have perpended	I must have been perpending
you must have been perpending
he must have been perpending
we must have been perpending
you must have been perpending
they must have been perpending	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not perpend
you must not perpend
he must not perpend
we must not perpend
you must not perpend
they must not perpend 	I must not be perpending
you must not be perpending
he must not be perpending
we must not be perpending
you must not be perpending
they must not be perpending	I must not have perpended
you must not have perpended
he must not have perpended
we must not have perpended
you must not have perpended
they must not have perpended	I must not have been perpending
you must not have been perpending
he must not have been perpending
we must not have been perpending
you must not have been perpending
they must not have been perpending	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I perpend?
must you perpend?
must he perpend?
must we perpend?
must you perpend?
must they perpend? 	must I be perpending?
must you be perpending?
must he be perpending?
must we be perpending?
must you be perpending?
must they be perpending? 	must I have perpended?
must you have perpended?
must he have perpended?
must we have perpended?
must you have perpended?
must they have perpended? 	must I have been perpending?
must you have been perpending?
must he have been perpending?
must we have been perpending?
must you have been perpending?
must they have been perpending? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not perpend?
must you not perpend?
must he not perpend?
must we not perpend?
must you not perpend?
must they not perpend? 	must I not be perpending?
must you not be perpending?
must he not be perpending?
must we not be perpending?
must you not be perpending?
must they not be perpending? 	must I not have perpended?
must you not have perpended?
must he not have perpended?
must we not have perpended?
must you not have perpended?
must they not have perpended? 	must I not have been perpending?
must you not have been perpending?
must he not have been perpending?
must we not have been perpending?
must you not have been perpending?
must they not have been perpending?