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