must blunder
Verbo regular: blunder - blundered- blundered

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must blunder
you must blunder
he must blunder
we must blunder
you must blunder
they must blunder 	I must be blundering
you must be blundering
he must be blundering
we must be blundering
you must be blundering
they must be blundering	I must have blundered
you must have blundered
he must have blundered
we must have blundered
you must have blundered
they must have blundered	I must have been blundering
you must have been blundering
he must have been blundering
we must have been blundering
you must have been blundering
they must have been blundering	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not blunder
you must not blunder
he must not blunder
we must not blunder
you must not blunder
they must not blunder 	I must not be blundering
you must not be blundering
he must not be blundering
we must not be blundering
you must not be blundering
they must not be blundering	I must not have blundered
you must not have blundered
he must not have blundered
we must not have blundered
you must not have blundered
they must not have blundered	I must not have been blundering
you must not have been blundering
he must not have been blundering
we must not have been blundering
you must not have been blundering
they must not have been blundering	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I blunder?
must you blunder?
must he blunder?
must we blunder?
must you blunder?
must they blunder? 	must I be blundering?
must you be blundering?
must he be blundering?
must we be blundering?
must you be blundering?
must they be blundering? 	must I have blundered?
must you have blundered?
must he have blundered?
must we have blundered?
must you have blundered?
must they have blundered? 	must I have been blundering?
must you have been blundering?
must he have been blundering?
must we have been blundering?
must you have been blundering?
must they have been blundering? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not blunder?
must you not blunder?
must he not blunder?
must we not blunder?
must you not blunder?
must they not blunder? 	must I not be blundering?
must you not be blundering?
must he not be blundering?
must we not be blundering?
must you not be blundering?
must they not be blundering? 	must I not have blundered?
must you not have blundered?
must he not have blundered?
must we not have blundered?
must you not have blundered?
must they not have blundered? 	must I not have been blundering?
must you not have been blundering?
must he not have been blundering?
must we not have been blundering?
must you not have been blundering?
must they not have been blundering?