I can crab you can crab he can crab we can crab you can crab they can crab
Forma con V-ing
I can be crabbing you can be crabbing he can be crabbing we can be crabbing you can be crabbing they can be crabbing
Perfecto
I can have crabbed you can have crabbed he can have crabbed we can have crabbed you can have crabbed they can have crabbed
Perfecto con V-ing
I can have been crabbing you can have been crabbing he can have been crabbing we can have been crabbing you can have been crabbing they can have been crabbing
Negación
Forma simple
I can't crab you can't crab he can't crab we can't crab you can't crab they can't crab
Forma con V-ing
I can't be crabbing you can't be crabbing he can't be crabbing we can't be crabbing you can't be crabbing they can't be crabbing
Perfecto
I can't have crabbed you can't have crabbed he can't have crabbed we can't have crabbed you can't have crabbed they can't have crabbed
Perfecto con V-ing
I can't have been crabbing you can't have been crabbing he can't have been crabbing we can't have been crabbing you can't have been crabbing they can't have been crabbing
Forma interrogativa
Forma simple
can I crab? can you crab? can he crab? can we crab? can you crab? can they crab?
Forma con V-ing
can I be crabbing? can you be crabbing? can he be crabbing? can we be crabbing? can you be crabbing? can they be crabbing?
Perfecto
can I have crabbed? can you have crabbed? can he have crabbed? can we have crabbed? can you have crabbed? can they have crabbed?
Perfecto con V-ing
can I have been crabbing? can you have been crabbing? can he have been crabbing? can we have been crabbing? can you have been crabbing? can they have been crabbing?
Forma interro-negativa
Forma simple
can't I crab? can't you crab? can't he crab? can't we crab? can't you crab? can't they crab?
Forma con V-ing
can't I be crabbing? can't you be crabbing? can't he be crabbing? can't we be crabbing? can't you be crabbing? can't they be crabbing?
Perfecto
can't I have crabbed? can't you have crabbed? can't he have crabbed? can't we have crabbed? can't you have crabbed? can't they have crabbed?
Perfecto con V-ing
can't I have been crabbing? can't you have been crabbing? can't he have been crabbing? can't we have been crabbing? can't you have been crabbing? can't they have been crabbing?