could calendar
Verbo regular: calendar - calendared- calendared

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could calendar
you could calendar
he could calendar
we could calendar
you could calendar
they could calendar 	I could be calendaring
you could be calendaring
he could be calendaring
we could be calendaring
you could be calendaring
they could be calendaring	I could have calendared
you could have calendared
he could have calendared
we could have calendared
you could have calendared
they could have calendared	I could have been calendaring
you could have been calendaring
he could have been calendaring
we could have been calendaring
you could have been calendaring
they could have been calendaring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not calendar
you could not calendar
he could not calendar
we could not calendar
you could not calendar
they could not calendar 	I could not be calendaring
you could not be calendaring
he could not be calendaring
we could not be calendaring
you could not be calendaring
they could not be calendaring	I could not have calendared
you could not have calendared
he could not have calendared
we could not have calendared
you could not have calendared
they could not have calendared	I could not have been calendaring
you could not have been calendaring
he could not have been calendaring
we could not have been calendaring
you could not have been calendaring
they could not have been calendaring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I calendar?
could you calendar?
could he calendar?
could we calendar?
could you calendar?
could they calendar? 	could I be calendaring?
could you be calendaring?
could he be calendaring?
could we be calendaring?
could you be calendaring?
could they be calendaring? 	could I have calendared?
could you have calendared?
could he have calendared?
could we have calendared?
could you have calendared?
could they have calendared? 	could I have been calendaring?
could you have been calendaring?
could he have been calendaring?
could we have been calendaring?
could you have been calendaring?
could they have been calendaring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not calendar?
could you not calendar?
could he not calendar?
could we not calendar?
could you not calendar?
could they not calendar? 	could I not be calendaring?
could you not be calendaring?
could he not be calendaring?
could we not be calendaring?
could you not be calendaring?
could they not be calendaring? 	could I not have calendared?
could you not have calendared?
could he not have calendared?
could we not have calendared?
could you not have calendared?
could they not have calendared? 	could I not have been calendaring?
could you not have been calendaring?
could he not have been calendaring?
could we not have been calendaring?
could you not have been calendaring?
could they not have been calendaring?