I could starch you could starch she could starch we could starch you could starch they could starch
Forma com V-ing
I could be starching you could be starching she could be starching we could be starching you could be starching they could be starching
Perfeito
I could have starched you could have starched she could have starched we could have starched you could have starched they could have starched
Perfeito com V-ing
I could have been starching you could have been starching she could have been starching we could have been starching you could have been starching they could have been starching
Negação
Forma simple
I could not starch you could not starch she could not starch we could not starch you could not starch they could not starch
Forma com V-ing
I could not be starching you could not be starching she could not be starching we could not be starching you could not be starching they could not be starching
Perfeito
I could not have starched you could not have starched she could not have starched we could not have starched you could not have starched they could not have starched
Perfeito com V-ing
I could not have been starching you could not have been starching she could not have been starching we could not have been starching you could not have been starching they could not have been starching
Forma interrogativa
Forma simple
could I starch? could you starch? could she starch? could we starch? could you starch? could they starch?
Forma com V-ing
could I be starching? could you be starching? could she be starching? could we be starching? could you be starching? could they be starching?
Perfeito
could I have starched? could you have starched? could she have starched? could we have starched? could you have starched? could they have starched?
Perfeito com V-ing
could I have been starching? could you have been starching? could she have been starching? could we have been starching? could you have been starching? could they have been starching?
Forma interro-Negação
Forma simple
could I not starch? could you not starch? could she not starch? could we not starch? could you not starch? could they not starch?
Forma com V-ing
could I not be starching? could you not be starching? could she not be starching? could we not be starching? could you not be starching? could they not be starching?
Perfeito
could I not have starched? could you not have starched? could she not have starched? could we not have starched? could you not have starched? could they not have starched?
Perfeito com V-ing
could I not have been starching? could you not have been starching? could she not have been starching? could we not have been starching? could you not have been starching? could they not have been starching?