could bus
Verbo regular: bus - bussed- bussed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could bus
you could bus
he could bus
we could bus
you could bus
they could bus 	I could be bussing
you could be bussing
he could be bussing
we could be bussing
you could be bussing
they could be bussing	I could have bussed
you could have bussed
he could have bussed
we could have bussed
you could have bussed
they could have bussed	I could have been bussing
you could have been bussing
he could have been bussing
we could have been bussing
you could have been bussing
they could have been bussing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not bus
you could not bus
he could not bus
we could not bus
you could not bus
they could not bus 	I could not be bussing
you could not be bussing
he could not be bussing
we could not be bussing
you could not be bussing
they could not be bussing	I could not have bussed
you could not have bussed
he could not have bussed
we could not have bussed
you could not have bussed
they could not have bussed	I could not have been bussing
you could not have been bussing
he could not have been bussing
we could not have been bussing
you could not have been bussing
they could not have been bussing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I bus?
could you bus?
could he bus?
could we bus?
could you bus?
could they bus? 	could I be bussing?
could you be bussing?
could he be bussing?
could we be bussing?
could you be bussing?
could they be bussing? 	could I have bussed?
could you have bussed?
could he have bussed?
could we have bussed?
could you have bussed?
could they have bussed? 	could I have been bussing?
could you have been bussing?
could he have been bussing?
could we have been bussing?
could you have been bussing?
could they have been bussing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not bus?
could you not bus?
could he not bus?
could we not bus?
could you not bus?
could they not bus? 	could I not be bussing?
could you not be bussing?
could he not be bussing?
could we not be bussing?
could you not be bussing?
could they not be bussing? 	could I not have bussed?
could you not have bussed?
could he not have bussed?
could we not have bussed?
could you not have bussed?
could they not have bussed? 	could I not have been bussing?
could you not have been bussing?
could he not have been bussing?
could we not have been bussing?
could you not have been bussing?
could they not have been bussing?