I could tease you could tease he could tease we could tease you could tease they could tease
Forma con V-ing
I could be teasing you could be teasing he could be teasing we could be teasing you could be teasing they could be teasing
Perfecto
I could have teased you could have teased he could have teased we could have teased you could have teased they could have teased
Perfecto con V-ing
I could have been teasing you could have been teasing he could have been teasing we could have been teasing you could have been teasing they could have been teasing
Negación
Forma simple
I could not tease you could not tease he could not tease we could not tease you could not tease they could not tease
Forma con V-ing
I could not be teasing you could not be teasing he could not be teasing we could not be teasing you could not be teasing they could not be teasing
Perfecto
I could not have teased you could not have teased he could not have teased we could not have teased you could not have teased they could not have teased
Perfecto con V-ing
I could not have been teasing you could not have been teasing he could not have been teasing we could not have been teasing you could not have been teasing they could not have been teasing
Forma interrogativa
Forma simple
could I tease? could you tease? could he tease? could we tease? could you tease? could they tease?
Forma con V-ing
could I be teasing? could you be teasing? could he be teasing? could we be teasing? could you be teasing? could they be teasing?
Perfecto
could I have teased? could you have teased? could he have teased? could we have teased? could you have teased? could they have teased?
Perfecto con V-ing
could I have been teasing? could you have been teasing? could he have been teasing? could we have been teasing? could you have been teasing? could they have been teasing?
Forma interro-negativa
Forma simple
could I not tease? could you not tease? could he not tease? could we not tease? could you not tease? could they not tease?
Forma con V-ing
could I not be teasing? could you not be teasing? could he not be teasing? could we not be teasing? could you not be teasing? could they not be teasing?
Perfecto
could I not have teased? could you not have teased? could he not have teased? could we not have teased? could you not have teased? could they not have teased?
Perfecto con V-ing
could I not have been teasing? could you not have been teasing? could he not have been teasing? could we not have been teasing? could you not have been teasing? could they not have been teasing?