must groan
Verbo regular: groan - groaned- groaned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must groan
you must groan
he must groan
we must groan
you must groan
they must groan 	I must be groaning
you must be groaning
he must be groaning
we must be groaning
you must be groaning
they must be groaning	I must have groaned
you must have groaned
he must have groaned
we must have groaned
you must have groaned
they must have groaned	I must have been groaning
you must have been groaning
he must have been groaning
we must have been groaning
you must have been groaning
they must have been groaning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't groan
you mustn't groan
he mustn't groan
we mustn't groan
you mustn't groan
they mustn't groan 	I mustn't be groaning
you mustn't be groaning
he mustn't be groaning
we mustn't be groaning
you mustn't be groaning
they mustn't be groaning	I mustn't have groaned
you mustn't have groaned
he mustn't have groaned
we mustn't have groaned
you mustn't have groaned
they mustn't have groaned	I mustn't have been groaning
you mustn't have been groaning
he mustn't have been groaning
we mustn't have been groaning
you mustn't have been groaning
they mustn't have been groaning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I groan?
must you groan?
must he groan?
must we groan?
must you groan?
must they groan? 	must I be groaning?
must you be groaning?
must he be groaning?
must we be groaning?
must you be groaning?
must they be groaning? 	must I have groaned?
must you have groaned?
must he have groaned?
must we have groaned?
must you have groaned?
must they have groaned? 	must I have been groaning?
must you have been groaning?
must he have been groaning?
must we have been groaning?
must you have been groaning?
must they have been groaning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I groan?
mustn't you groan?
mustn't he groan?
mustn't we groan?
mustn't you groan?
mustn't they groan? 	mustn't I be groaning?
mustn't you be groaning?
mustn't he be groaning?
mustn't we be groaning?
mustn't you be groaning?
mustn't they be groaning? 	mustn't I have groaned?
mustn't you have groaned?
mustn't he have groaned?
mustn't we have groaned?
mustn't you have groaned?
mustn't they have groaned? 	mustn't I have been groaning?
mustn't you have been groaning?
mustn't he have been groaning?
mustn't we have been groaning?
mustn't you have been groaning?
mustn't they have been groaning?