I can retread you can retread he can retread we can retread you can retread they can retread
Forma con V-ing
I can be retreading you can be retreading he can be retreading we can be retreading you can be retreading they can be retreading
Perfecto
I can have retreaded you can have retreaded he can have retreaded we can have retreaded you can have retreaded they can have retreaded
Perfecto con V-ing
I can have been retreading you can have been retreading he can have been retreading we can have been retreading you can have been retreading they can have been retreading
Negación
Forma simple
I cannot retread you cannot retread he cannot retread we cannot retread you cannot retread they cannot retread
Forma con V-ing
I cannot be retreading you cannot be retreading he cannot be retreading we cannot be retreading you cannot be retreading they cannot be retreading
Perfecto
I cannot have retreaded you cannot have retreaded he cannot have retreaded we cannot have retreaded you cannot have retreaded they cannot have retreaded
Perfecto con V-ing
I cannot have been retreading you cannot have been retreading he cannot have been retreading we cannot have been retreading you cannot have been retreading they cannot have been retreading
Forma interrogativa
Forma simple
can I retread? can you retread? can he retread? can we retread? can you retread? can they retread?
Forma con V-ing
can I be retreading? can you be retreading? can he be retreading? can we be retreading? can you be retreading? can they be retreading?
Perfecto
can I have retreaded? can you have retreaded? can he have retreaded? can we have retreaded? can you have retreaded? can they have retreaded?
Perfecto con V-ing
can I have been retreading? can you have been retreading? can he have been retreading? can we have been retreading? can you have been retreading? can they have been retreading?
Forma interro-negativa
Forma simple
can I not retread? can you not retread? can he not retread? can we not retread? can you not retread? can they not retread?
Forma con V-ing
can I not be retreading? can you not be retreading? can he not be retreading? can we not be retreading? can you not be retreading? can they not be retreading?
Perfecto
can I not have retreaded? can you not have retreaded? can he not have retreaded? can we not have retreaded? can you not have retreaded? can they not have retreaded?
Perfecto con V-ing
can I not have been retreading? can you not have been retreading? can he not have been retreading? can we not have been retreading? can you not have been retreading? can they not have been retreading?