Verbo regular: backstitch - backstitched - backstitched
Afirmación
Forma simple
I must backstitch you must backstitch he must backstitch we must backstitch you must backstitch they must backstitch
Forma con V-ing
I must be backstitching you must be backstitching he must be backstitching we must be backstitching you must be backstitching they must be backstitching
Perfecto
I must have backstitched you must have backstitched he must have backstitched we must have backstitched you must have backstitched they must have backstitched
Perfecto con V-ing
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
I mustn't backstitch you mustn't backstitch he mustn't backstitch we mustn't backstitch you mustn't backstitch they mustn't backstitch
Forma con V-ing
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
Perfecto
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
Perfecto con V-ing
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
must I backstitch? must you backstitch? must he backstitch? must we backstitch? must you backstitch? must they backstitch?
Forma con V-ing
must I be backstitching? must you be backstitching? must he be backstitching? must we be backstitching? must you be backstitching? must they be backstitching?
Perfecto
must I have backstitched? must you have backstitched? must he have backstitched? must we have backstitched? must you have backstitched? must they have backstitched?
Perfecto con V-ing
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
mustn't I backstitch? mustn't you backstitch? mustn't he backstitch? mustn't we backstitch? mustn't you backstitch? mustn't they backstitch?
Forma con V-ing
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?
Perfecto
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?
Perfecto con V-ing
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?