I can bob you can bob she can bob we can bob you can bob they can bob
Forma con V-ing
I can be bobbing you can be bobbing she can be bobbing we can be bobbing you can be bobbing they can be bobbing
Perfecto
I can have bobbed you can have bobbed she can have bobbed we can have bobbed you can have bobbed they can have bobbed
Perfecto con V-ing
I can have been bobbing you can have been bobbing she can have been bobbing we can have been bobbing you can have been bobbing they can have been bobbing
Negación
Forma simple
I can't bob you can't bob she can't bob we can't bob you can't bob they can't bob
Forma con V-ing
I can't be bobbing you can't be bobbing she can't be bobbing we can't be bobbing you can't be bobbing they can't be bobbing
Perfecto
I can't have bobbed you can't have bobbed she can't have bobbed we can't have bobbed you can't have bobbed they can't have bobbed
Perfecto con V-ing
I can't have been bobbing you can't have been bobbing she can't have been bobbing we can't have been bobbing you can't have been bobbing they can't have been bobbing
Forma interrogativa
Forma simple
can I bob? can you bob? can she bob? can we bob? can you bob? can they bob?
Forma con V-ing
can I be bobbing? can you be bobbing? can she be bobbing? can we be bobbing? can you be bobbing? can they be bobbing?
Perfecto
can I have bobbed? can you have bobbed? can she have bobbed? can we have bobbed? can you have bobbed? can they have bobbed?
Perfecto con V-ing
can I have been bobbing? can you have been bobbing? can she have been bobbing? can we have been bobbing? can you have been bobbing? can they have been bobbing?
Forma interro-negativa
Forma simple
can't I bob? can't you bob? can't she bob? can't we bob? can't you bob? can't they bob?
Forma con V-ing
can't I be bobbing? can't you be bobbing? can't she be bobbing? can't we be bobbing? can't you be bobbing? can't they be bobbing?
Perfecto
can't I have bobbed? can't you have bobbed? can't she have bobbed? can't we have bobbed? can't you have bobbed? can't they have bobbed?
Perfecto con V-ing
can't I have been bobbing? can't you have been bobbing? can't she have been bobbing? can't we have been bobbing? can't you have been bobbing? can't they have been bobbing?