must plank
Verbo regular: plank - planked- planked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must plank
you must plank
he must plank
we must plank
you must plank
they must plank 	I must be planking
you must be planking
he must be planking
we must be planking
you must be planking
they must be planking	I must have planked
you must have planked
he must have planked
we must have planked
you must have planked
they must have planked	I must have been planking
you must have been planking
he must have been planking
we must have been planking
you must have been planking
they must have been planking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't plank
you mustn't plank
he mustn't plank
we mustn't plank
you mustn't plank
they mustn't plank 	I mustn't be planking
you mustn't be planking
he mustn't be planking
we mustn't be planking
you mustn't be planking
they mustn't be planking	I mustn't have planked
you mustn't have planked
he mustn't have planked
we mustn't have planked
you mustn't have planked
they mustn't have planked	I mustn't have been planking
you mustn't have been planking
he mustn't have been planking
we mustn't have been planking
you mustn't have been planking
they mustn't have been planking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I plank?
must you plank?
must he plank?
must we plank?
must you plank?
must they plank? 	must I be planking?
must you be planking?
must he be planking?
must we be planking?
must you be planking?
must they be planking? 	must I have planked?
must you have planked?
must he have planked?
must we have planked?
must you have planked?
must they have planked? 	must I have been planking?
must you have been planking?
must he have been planking?
must we have been planking?
must you have been planking?
must they have been planking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I plank?
mustn't you plank?
mustn't he plank?
mustn't we plank?
mustn't you plank?
mustn't they plank? 	mustn't I be planking?
mustn't you be planking?
mustn't he be planking?
mustn't we be planking?
mustn't you be planking?
mustn't they be planking? 	mustn't I have planked?
mustn't you have planked?
mustn't he have planked?
mustn't we have planked?
mustn't you have planked?
mustn't they have planked? 	mustn't I have been planking?
mustn't you have been planking?
mustn't he have been planking?
mustn't we have been planking?
mustn't you have been planking?
mustn't they have been planking?