I could succumb you could succumb she could succumb we could succumb you could succumb they could succumb
Forma com V-ing
I could be succumbing you could be succumbing she could be succumbing we could be succumbing you could be succumbing they could be succumbing
Perfeito
I could have succumbed you could have succumbed she could have succumbed we could have succumbed you could have succumbed they could have succumbed
Perfeito com V-ing
I could have been succumbing you could have been succumbing she could have been succumbing we could have been succumbing you could have been succumbing they could have been succumbing
Negação
Forma simple
I could not succumb you could not succumb she could not succumb we could not succumb you could not succumb they could not succumb
Forma com V-ing
I could not be succumbing you could not be succumbing she could not be succumbing we could not be succumbing you could not be succumbing they could not be succumbing
Perfeito
I could not have succumbed you could not have succumbed she could not have succumbed we could not have succumbed you could not have succumbed they could not have succumbed
Perfeito com V-ing
I could not have been succumbing you could not have been succumbing she could not have been succumbing we could not have been succumbing you could not have been succumbing they could not have been succumbing
Forma interrogativa
Forma simple
could I succumb? could you succumb? could she succumb? could we succumb? could you succumb? could they succumb?
Forma com V-ing
could I be succumbing? could you be succumbing? could she be succumbing? could we be succumbing? could you be succumbing? could they be succumbing?
Perfeito
could I have succumbed? could you have succumbed? could she have succumbed? could we have succumbed? could you have succumbed? could they have succumbed?
Perfeito com V-ing
could I have been succumbing? could you have been succumbing? could she have been succumbing? could we have been succumbing? could you have been succumbing? could they have been succumbing?
Forma interro-Negação
Forma simple
could I not succumb? could you not succumb? could she not succumb? could we not succumb? could you not succumb? could they not succumb?
Forma com V-ing
could I not be succumbing? could you not be succumbing? could she not be succumbing? could we not be succumbing? could you not be succumbing? could they not be succumbing?
Perfeito
could I not have succumbed? could you not have succumbed? could she not have succumbed? could we not have succumbed? could you not have succumbed? could they not have succumbed?
Perfeito com V-ing
could I not have been succumbing? could you not have been succumbing? could she not have been succumbing? could we not have been succumbing? could you not have been succumbing? could they not have been succumbing?