must backstitch
Verbo regular: backstitch - backstitched- backstitched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must backstitch
you must backstitch
he must backstitch
we must backstitch
you must backstitch
they must backstitch 	I must be backstitching
you must be backstitching
he must be backstitching
we must be backstitching
you must be backstitching
they must be backstitching	I must have backstitched
you must have backstitched
he must have backstitched
we must have backstitched
you must have backstitched
they must have backstitched	I must have been backstitching
you must have been backstitching
he must have been backstitching
we must have been backstitching
you must have been backstitching
they must have been backstitching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't backstitch
you mustn't backstitch
he mustn't backstitch
we mustn't backstitch
you mustn't backstitch
they mustn't backstitch 	I mustn't be backstitching
you mustn't be backstitching
he mustn't be backstitching
we mustn't be backstitching
you mustn't be backstitching
they mustn't be backstitching	I mustn't have backstitched
you mustn't have backstitched
he mustn't have backstitched
we mustn't have backstitched
you mustn't have backstitched
they mustn't have backstitched	I mustn't have been backstitching
you mustn't have been backstitching
he mustn't have been backstitching
we mustn't have been backstitching
you mustn't have been backstitching
they mustn't have been backstitching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I backstitch?
must you backstitch?
must he backstitch?
must we backstitch?
must you backstitch?
must they backstitch? 	must I be backstitching?
must you be backstitching?
must he be backstitching?
must we be backstitching?
must you be backstitching?
must they be backstitching? 	must I have backstitched?
must you have backstitched?
must he have backstitched?
must we have backstitched?
must you have backstitched?
must they have backstitched? 	must I have been backstitching?
must you have been backstitching?
must he have been backstitching?
must we have been backstitching?
must you have been backstitching?
must they have been backstitching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I backstitch?
mustn't you backstitch?
mustn't he backstitch?
mustn't we backstitch?
mustn't you backstitch?
mustn't they backstitch? 	mustn't I be backstitching?
mustn't you be backstitching?
mustn't he be backstitching?
mustn't we be backstitching?
mustn't you be backstitching?
mustn't they be backstitching? 	mustn't I have backstitched?
mustn't you have backstitched?
mustn't he have backstitched?
mustn't we have backstitched?
mustn't you have backstitched?
mustn't they have backstitched? 	mustn't I have been backstitching?
mustn't you have been backstitching?
mustn't he have been backstitching?
mustn't we have been backstitching?
mustn't you have been backstitching?
mustn't they have been backstitching?