could calender
Verbo regolare: calender - calendered- calendered

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could calender
you could calender
he could calender
we could calender
you could calender
they could calender 	I could be calendering
you could be calendering
he could be calendering
we could be calendering
you could be calendering
they could be calendering	I could have calendered
you could have calendered
he could have calendered
we could have calendered
you could have calendered
they could have calendered	I could have been calendering
you could have been calendering
he could have been calendering
we could have been calendering
you could have been calendering
they could have been calendering	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I could not calender
you could not calender
he could not calender
we could not calender
you could not calender
they could not calender 	I could not be calendering
you could not be calendering
he could not be calendering
we could not be calendering
you could not be calendering
they could not be calendering	I could not have calendered
you could not have calendered
he could not have calendered
we could not have calendered
you could not have calendered
they could not have calendered	I could not have been calendering
you could not have been calendering
he could not have been calendering
we could not have been calendering
you could not have been calendering
they could not have been calendering	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I calender?
could you calender?
could he calender?
could we calender?
could you calender?
could they calender? 	could I be calendering?
could you be calendering?
could he be calendering?
could we be calendering?
could you be calendering?
could they be calendering? 	could I have calendered?
could you have calendered?
could he have calendered?
could we have calendered?
could you have calendered?
could they have calendered? 	could I have been calendering?
could you have been calendering?
could he have been calendering?
could we have been calendering?
could you have been calendering?
could they have been calendering? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
could I not calender?
could you not calender?
could he not calender?
could we not calender?
could you not calender?
could they not calender? 	could I not be calendering?
could you not be calendering?
could he not be calendering?
could we not be calendering?
could you not be calendering?
could they not be calendering? 	could I not have calendered?
could you not have calendered?
could he not have calendered?
could we not have calendered?
could you not have calendered?
could they not have calendered? 	could I not have been calendering?
could you not have been calendering?
could he not have been calendering?
could we not have been calendering?
could you not have been calendering?
could they not have been calendering?