could lithograph
Verbo regular: lithograph - lithographed- lithographed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could lithograph
you could lithograph
she could lithograph
we could lithograph
you could lithograph
they could lithograph 	I could be lithographing
you could be lithographing
she could be lithographing
we could be lithographing
you could be lithographing
they could be lithographing	I could have lithographed
you could have lithographed
she could have lithographed
we could have lithographed
you could have lithographed
they could have lithographed	I could have been lithographing
you could have been lithographing
she could have been lithographing
we could have been lithographing
you could have been lithographing
they could have been lithographing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not lithograph
you could not lithograph
she could not lithograph
we could not lithograph
you could not lithograph
they could not lithograph 	I could not be lithographing
you could not be lithographing
she could not be lithographing
we could not be lithographing
you could not be lithographing
they could not be lithographing	I could not have lithographed
you could not have lithographed
she could not have lithographed
we could not have lithographed
you could not have lithographed
they could not have lithographed	I could not have been lithographing
you could not have been lithographing
she could not have been lithographing
we could not have been lithographing
you could not have been lithographing
they could not have been lithographing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I lithograph?
could you lithograph?
could she lithograph?
could we lithograph?
could you lithograph?
could they lithograph? 	could I be lithographing?
could you be lithographing?
could she be lithographing?
could we be lithographing?
could you be lithographing?
could they be lithographing? 	could I have lithographed?
could you have lithographed?
could she have lithographed?
could we have lithographed?
could you have lithographed?
could they have lithographed? 	could I have been lithographing?
could you have been lithographing?
could she have been lithographing?
could we have been lithographing?
could you have been lithographing?
could they have been lithographing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not lithograph?
could you not lithograph?
could she not lithograph?
could we not lithograph?
could you not lithograph?
could they not lithograph? 	could I not be lithographing?
could you not be lithographing?
could she not be lithographing?
could we not be lithographing?
could you not be lithographing?
could they not be lithographing? 	could I not have lithographed?
could you not have lithographed?
could she not have lithographed?
could we not have lithographed?
could you not have lithographed?
could they not have lithographed? 	could I not have been lithographing?
could you not have been lithographing?
could she not have been lithographing?
could we not have been lithographing?
could you not have been lithographing?
could they not have been lithographing?