I could lack you could lack she could lack we could lack you could lack they could lack
Forma con V-ing
I could be lacking you could be lacking she could be lacking we could be lacking you could be lacking they could be lacking
Perfecto
I could have lacked you could have lacked she could have lacked we could have lacked you could have lacked they could have lacked
Perfecto con V-ing
I could have been lacking you could have been lacking she could have been lacking we could have been lacking you could have been lacking they could have been lacking
Negación
Forma simple
I couldn't lack you couldn't lack she couldn't lack we couldn't lack you couldn't lack they couldn't lack
Forma con V-ing
I couldn't be lacking you couldn't be lacking she couldn't be lacking we couldn't be lacking you couldn't be lacking they couldn't be lacking
Perfecto
I couldn't have lacked you couldn't have lacked she couldn't have lacked we couldn't have lacked you couldn't have lacked they couldn't have lacked
Perfecto con V-ing
I couldn't have been lacking you couldn't have been lacking she couldn't have been lacking we couldn't have been lacking you couldn't have been lacking they couldn't have been lacking
Forma interrogativa
Forma simple
could I lack? could you lack? could she lack? could we lack? could you lack? could they lack?
Forma con V-ing
could I be lacking? could you be lacking? could she be lacking? could we be lacking? could you be lacking? could they be lacking?
Perfecto
could I have lacked? could you have lacked? could she have lacked? could we have lacked? could you have lacked? could they have lacked?
Perfecto con V-ing
could I have been lacking? could you have been lacking? could she have been lacking? could we have been lacking? could you have been lacking? could they have been lacking?
Forma interro-negativa
Forma simple
couldn't I lack? couldn't you lack? couldn't she lack? couldn't we lack? couldn't you lack? couldn't they lack?
Forma con V-ing
couldn't I be lacking? couldn't you be lacking? couldn't she be lacking? couldn't we be lacking? couldn't you be lacking? couldn't they be lacking?
Perfecto
couldn't I have lacked? couldn't you have lacked? couldn't she have lacked? couldn't we have lacked? couldn't you have lacked? couldn't they have lacked?
Perfecto con V-ing
couldn't I have been lacking? couldn't you have been lacking? couldn't she have been lacking? couldn't we have been lacking? couldn't you have been lacking? couldn't they have been lacking?