could sex
Verbo regular: sex - sexed- sexed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could sex
you could sex
he could sex
we could sex
you could sex
they could sex 	I could be sexing
you could be sexing
he could be sexing
we could be sexing
you could be sexing
they could be sexing	I could have sexed
you could have sexed
he could have sexed
we could have sexed
you could have sexed
they could have sexed	I could have been sexing
you could have been sexing
he could have been sexing
we could have been sexing
you could have been sexing
they could have been sexing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't sex
you couldn't sex
he couldn't sex
we couldn't sex
you couldn't sex
they couldn't sex 	I couldn't be sexing
you couldn't be sexing
he couldn't be sexing
we couldn't be sexing
you couldn't be sexing
they couldn't be sexing	I couldn't have sexed
you couldn't have sexed
he couldn't have sexed
we couldn't have sexed
you couldn't have sexed
they couldn't have sexed	I couldn't have been sexing
you couldn't have been sexing
he couldn't have been sexing
we couldn't have been sexing
you couldn't have been sexing
they couldn't have been sexing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I sex?
could you sex?
could he sex?
could we sex?
could you sex?
could they sex? 	could I be sexing?
could you be sexing?
could he be sexing?
could we be sexing?
could you be sexing?
could they be sexing? 	could I have sexed?
could you have sexed?
could he have sexed?
could we have sexed?
could you have sexed?
could they have sexed? 	could I have been sexing?
could you have been sexing?
could he have been sexing?
could we have been sexing?
could you have been sexing?
could they have been sexing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I sex?
couldn't you sex?
couldn't he sex?
couldn't we sex?
couldn't you sex?
couldn't they sex? 	couldn't I be sexing?
couldn't you be sexing?
couldn't he be sexing?
couldn't we be sexing?
couldn't you be sexing?
couldn't they be sexing? 	couldn't I have sexed?
couldn't you have sexed?
couldn't he have sexed?
couldn't we have sexed?
couldn't you have sexed?
couldn't they have sexed? 	couldn't I have been sexing?
couldn't you have been sexing?
couldn't he have been sexing?
couldn't we have been sexing?
couldn't you have been sexing?
couldn't they have been sexing?