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 must not flip
you must not flip
he must not flip
we must not flip
you must not flip
they must not flip 	I must not be flipping
you must not be flipping
he must not be flipping
we must not be flipping
you must not be flipping
they must not be flipping	I must not have flipped
you must not have flipped
he must not have flipped
we must not have flipped
you must not have flipped
they must not have flipped	I must not have been flipping
you must not have been flipping
he must not have been flipping
we must not have been flipping
you must not have been flipping
they must not 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 	
must I not flip?
must you not flip?
must he not flip?
must we not flip?
must you not flip?
must they not flip? 	must I not be flipping?
must you not be flipping?
must he not be flipping?
must we not be flipping?
must you not be flipping?
must they not be flipping? 	must I not have flipped?
must you not have flipped?
must he not have flipped?
must we not have flipped?
must you not have flipped?
must they not have flipped? 	must I not have been flipping?
must you not have been flipping?
must he not have been flipping?
must we not have been flipping?
must you not have been flipping?
must they not have been flipping?