could under
Verbo regular: under - undered- undered

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could under
you could under
she could under
we could under
you could under
they could under 	I could be undering
you could be undering
she could be undering
we could be undering
you could be undering
they could be undering	I could have undered
you could have undered
she could have undered
we could have undered
you could have undered
they could have undered	I could have been undering
you could have been undering
she could have been undering
we could have been undering
you could have been undering
they could have been undering	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't under
you couldn't under
she couldn't under
we couldn't under
you couldn't under
they couldn't under 	I couldn't be undering
you couldn't be undering
she couldn't be undering
we couldn't be undering
you couldn't be undering
they couldn't be undering	I couldn't have undered
you couldn't have undered
she couldn't have undered
we couldn't have undered
you couldn't have undered
they couldn't have undered	I couldn't have been undering
you couldn't have been undering
she couldn't have been undering
we couldn't have been undering
you couldn't have been undering
they couldn't have been undering	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I under?
could you under?
could she under?
could we under?
could you under?
could they under? 	could I be undering?
could you be undering?
could she be undering?
could we be undering?
could you be undering?
could they be undering? 	could I have undered?
could you have undered?
could she have undered?
could we have undered?
could you have undered?
could they have undered? 	could I have been undering?
could you have been undering?
could she have been undering?
could we have been undering?
could you have been undering?
could they have been undering? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I under?
couldn't you under?
couldn't she under?
couldn't we under?
couldn't you under?
couldn't they under? 	couldn't I be undering?
couldn't you be undering?
couldn't she be undering?
couldn't we be undering?
couldn't you be undering?
couldn't they be undering? 	couldn't I have undered?
couldn't you have undered?
couldn't she have undered?
couldn't we have undered?
couldn't you have undered?
couldn't they have undered? 	couldn't I have been undering?
couldn't you have been undering?
couldn't she have been undering?
couldn't we have been undering?
couldn't you have been undering?
couldn't they have been undering?