must suckle
Verbo regular: suckle - suckled- suckled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must suckle
you must suckle
he must suckle
we must suckle
you must suckle
they must suckle 	I must be suckling
you must be suckling
he must be suckling
we must be suckling
you must be suckling
they must be suckling	I must have suckled
you must have suckled
he must have suckled
we must have suckled
you must have suckled
they must have suckled	I must have been suckling
you must have been suckling
he must have been suckling
we must have been suckling
you must have been suckling
they must have been suckling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not suckle
you must not suckle
he must not suckle
we must not suckle
you must not suckle
they must not suckle 	I must not be suckling
you must not be suckling
he must not be suckling
we must not be suckling
you must not be suckling
they must not be suckling	I must not have suckled
you must not have suckled
he must not have suckled
we must not have suckled
you must not have suckled
they must not have suckled	I must not have been suckling
you must not have been suckling
he must not have been suckling
we must not have been suckling
you must not have been suckling
they must not have been suckling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I suckle?
must you suckle?
must he suckle?
must we suckle?
must you suckle?
must they suckle? 	must I be suckling?
must you be suckling?
must he be suckling?
must we be suckling?
must you be suckling?
must they be suckling? 	must I have suckled?
must you have suckled?
must he have suckled?
must we have suckled?
must you have suckled?
must they have suckled? 	must I have been suckling?
must you have been suckling?
must he have been suckling?
must we have been suckling?
must you have been suckling?
must they have been suckling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not suckle?
must you not suckle?
must he not suckle?
must we not suckle?
must you not suckle?
must they not suckle? 	must I not be suckling?
must you not be suckling?
must he not be suckling?
must we not be suckling?
must you not be suckling?
must they not be suckling? 	must I not have suckled?
must you not have suckled?
must he not have suckled?
must we not have suckled?
must you not have suckled?
must they not have suckled? 	must I not have been suckling?
must you not have been suckling?
must he not have been suckling?
must we not have been suckling?
must you not have been suckling?
must they not have been suckling?