must flip
Verbo regular: flip - flipped- flipped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must flip
you must flip
he must flip
we must flip
you must flip
they must flip 	I must be flipping
you must be flipping
he must be flipping
we must be flipping
you must be flipping
they must be flipping	I must have flipped
you must have flipped
he must have flipped
we must have flipped
you must have flipped
they must have flipped	I must have been flipping
you must have been flipping
he must have been flipping
we must have been flipping
you must have been flipping
they must have been flipping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't flip
you mustn't flip
he mustn't flip
we mustn't flip
you mustn't flip
they mustn't flip 	I mustn't be flipping
you mustn't be flipping
he mustn't be flipping
we mustn't be flipping
you mustn't be flipping
they mustn't be flipping	I mustn't have flipped
you mustn't have flipped
he mustn't have flipped
we mustn't have flipped
you mustn't have flipped
they mustn't have flipped	I mustn't have been flipping
you mustn't have been flipping
he mustn't have been flipping
we mustn't have been flipping
you mustn't have been flipping
they mustn't have been flipping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I flip?
must you flip?
must he flip?
must we flip?
must you flip?
must they flip? 	must I be flipping?
must you be flipping?
must he be flipping?
must we be flipping?
must you be flipping?
must they be flipping? 	must I have flipped?
must you have flipped?
must he have flipped?
must we have flipped?
must you have flipped?
must they have flipped? 	must I have been flipping?
must you have been flipping?
must he have been flipping?
must we have been flipping?
must you have been flipping?
must they have been flipping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I flip?
mustn't you flip?
mustn't he flip?
mustn't we flip?
mustn't you flip?
mustn't they flip? 	mustn't I be flipping?
mustn't you be flipping?
mustn't he be flipping?
mustn't we be flipping?
mustn't you be flipping?
mustn't they be flipping? 	mustn't I have flipped?
mustn't you have flipped?
mustn't he have flipped?
mustn't we have flipped?
mustn't you have flipped?
mustn't they have flipped? 	mustn't I have been flipping?
mustn't you have been flipping?
mustn't he have been flipping?
mustn't we have been flipping?
mustn't you have been flipping?
mustn't they have been flipping?