I could supercalender you could supercalender she could supercalender we could supercalender you could supercalender they could supercalender
V-ing form
I could be supercalendering you could be supercalendering she could be supercalendering we could be supercalendering you could be supercalendering they could be supercalendering
Perfect
I could have supercalendered you could have supercalendered she could have supercalendered we could have supercalendered you could have supercalendered they could have supercalendered
V-ing perfect
I could have been supercalendering you could have been supercalendering she could have been supercalendering we could have been supercalendering you could have been supercalendering they could have been supercalendering
Negation
Simple form
I could not supercalender you could not supercalender she could not supercalender we could not supercalender you could not supercalender they could not supercalender
V-ing form
I could not be supercalendering you could not be supercalendering she could not be supercalendering we could not be supercalendering you could not be supercalendering they could not be supercalendering
Perfect
I could not have supercalendered you could not have supercalendered she could not have supercalendered we could not have supercalendered you could not have supercalendered they could not have supercalendered
V-ing perfect
I could not have been supercalendering you could not have been supercalendering she could not have been supercalendering we could not have been supercalendering you could not have been supercalendering they could not have been supercalendering
Interrogative form
Simple form
could I supercalender? could you supercalender? could she supercalender? could we supercalender? could you supercalender? could they supercalender?
V-ing form
could I be supercalendering? could you be supercalendering? could she be supercalendering? could we be supercalendering? could you be supercalendering? could they be supercalendering?
Perfect
could I have supercalendered? could you have supercalendered? could she have supercalendered? could we have supercalendered? could you have supercalendered? could they have supercalendered?
V-ing perfect
could I have been supercalendering? could you have been supercalendering? could she have been supercalendering? could we have been supercalendering? could you have been supercalendering? could they have been supercalendering?
Interro-negative form
Simple form
could I not supercalender? could you not supercalender? could she not supercalender? could we not supercalender? could you not supercalender? could they not supercalender?
V-ing form
could I not be supercalendering? could you not be supercalendering? could she not be supercalendering? could we not be supercalendering? could you not be supercalendering? could they not be supercalendering?
Perfect
could I not have supercalendered? could you not have supercalendered? could she not have supercalendered? could we not have supercalendered? could you not have supercalendered? could they not have supercalendered?
V-ing perfect
could I not have been supercalendering? could you not have been supercalendering? could she not have been supercalendering? could we not have been supercalendering? could you not have been supercalendering? could they not have been supercalendering?