must cuckoo
Verbo regular: cuckoo - cuckooed- cuckooed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must cuckoo
you must cuckoo
he must cuckoo
we must cuckoo
you must cuckoo
they must cuckoo 	I must be cuckooing
you must be cuckooing
he must be cuckooing
we must be cuckooing
you must be cuckooing
they must be cuckooing	I must have cuckooed
you must have cuckooed
he must have cuckooed
we must have cuckooed
you must have cuckooed
they must have cuckooed	I must have been cuckooing
you must have been cuckooing
he must have been cuckooing
we must have been cuckooing
you must have been cuckooing
they must have been cuckooing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not cuckoo
you must not cuckoo
he must not cuckoo
we must not cuckoo
you must not cuckoo
they must not cuckoo 	I must not be cuckooing
you must not be cuckooing
he must not be cuckooing
we must not be cuckooing
you must not be cuckooing
they must not be cuckooing	I must not have cuckooed
you must not have cuckooed
he must not have cuckooed
we must not have cuckooed
you must not have cuckooed
they must not have cuckooed	I must not have been cuckooing
you must not have been cuckooing
he must not have been cuckooing
we must not have been cuckooing
you must not have been cuckooing
they must not have been cuckooing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I cuckoo?
must you cuckoo?
must he cuckoo?
must we cuckoo?
must you cuckoo?
must they cuckoo? 	must I be cuckooing?
must you be cuckooing?
must he be cuckooing?
must we be cuckooing?
must you be cuckooing?
must they be cuckooing? 	must I have cuckooed?
must you have cuckooed?
must he have cuckooed?
must we have cuckooed?
must you have cuckooed?
must they have cuckooed? 	must I have been cuckooing?
must you have been cuckooing?
must he have been cuckooing?
must we have been cuckooing?
must you have been cuckooing?
must they have been cuckooing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not cuckoo?
must you not cuckoo?
must he not cuckoo?
must we not cuckoo?
must you not cuckoo?
must they not cuckoo? 	must I not be cuckooing?
must you not be cuckooing?
must he not be cuckooing?
must we not be cuckooing?
must you not be cuckooing?
must they not be cuckooing? 	must I not have cuckooed?
must you not have cuckooed?
must he not have cuckooed?
must we not have cuckooed?
must you not have cuckooed?
must they not have cuckooed? 	must I not have been cuckooing?
must you not have been cuckooing?
must he not have been cuckooing?
must we not have been cuckooing?
must you not have been cuckooing?
must they not have been cuckooing?