I could unlatch you could unlatch he could unlatch we could unlatch you could unlatch they could unlatch
Forma com V-ing
I could be unlatching you could be unlatching he could be unlatching we could be unlatching you could be unlatching they could be unlatching
Perfeito
I could have unlatched you could have unlatched he could have unlatched we could have unlatched you could have unlatched they could have unlatched
Perfeito com V-ing
I could have been unlatching you could have been unlatching he could have been unlatching we could have been unlatching you could have been unlatching they could have been unlatching
Negação
Forma simple
I could not unlatch you could not unlatch he could not unlatch we could not unlatch you could not unlatch they could not unlatch
Forma com V-ing
I could not be unlatching you could not be unlatching he could not be unlatching we could not be unlatching you could not be unlatching they could not be unlatching
Perfeito
I could not have unlatched you could not have unlatched he could not have unlatched we could not have unlatched you could not have unlatched they could not have unlatched
Perfeito com V-ing
I could not have been unlatching you could not have been unlatching he could not have been unlatching we could not have been unlatching you could not have been unlatching they could not have been unlatching
Forma interrogativa
Forma simple
could I unlatch? could you unlatch? could he unlatch? could we unlatch? could you unlatch? could they unlatch?
Forma com V-ing
could I be unlatching? could you be unlatching? could he be unlatching? could we be unlatching? could you be unlatching? could they be unlatching?
Perfeito
could I have unlatched? could you have unlatched? could he have unlatched? could we have unlatched? could you have unlatched? could they have unlatched?
Perfeito com V-ing
could I have been unlatching? could you have been unlatching? could he have been unlatching? could we have been unlatching? could you have been unlatching? could they have been unlatching?
Forma interro-Negação
Forma simple
could I not unlatch? could you not unlatch? could he not unlatch? could we not unlatch? could you not unlatch? could they not unlatch?
Forma com V-ing
could I not be unlatching? could you not be unlatching? could he not be unlatching? could we not be unlatching? could you not be unlatching? could they not be unlatching?
Perfeito
could I not have unlatched? could you not have unlatched? could he not have unlatched? could we not have unlatched? could you not have unlatched? could they not have unlatched?
Perfeito com V-ing
could I not have been unlatching? could you not have been unlatching? could he not have been unlatching? could we not have been unlatching? could you not have been unlatching? could they not have been unlatching?