I can push you can push she can push we can push you can push they can push
Forma con V-ing
I can be pushing you can be pushing she can be pushing we can be pushing you can be pushing they can be pushing
Perfecto
I can have pushed you can have pushed she can have pushed we can have pushed you can have pushed they can have pushed
Perfecto con V-ing
I can have been pushing you can have been pushing she can have been pushing we can have been pushing you can have been pushing they can have been pushing
Negación
Forma simple
I can't push you can't push she can't push we can't push you can't push they can't push
Forma con V-ing
I can't be pushing you can't be pushing she can't be pushing we can't be pushing you can't be pushing they can't be pushing
Perfecto
I can't have pushed you can't have pushed she can't have pushed we can't have pushed you can't have pushed they can't have pushed
Perfecto con V-ing
I can't have been pushing you can't have been pushing she can't have been pushing we can't have been pushing you can't have been pushing they can't have been pushing
Forma interrogativa
Forma simple
can I push? can you push? can she push? can we push? can you push? can they push?
Forma con V-ing
can I be pushing? can you be pushing? can she be pushing? can we be pushing? can you be pushing? can they be pushing?
Perfecto
can I have pushed? can you have pushed? can she have pushed? can we have pushed? can you have pushed? can they have pushed?
Perfecto con V-ing
can I have been pushing? can you have been pushing? can she have been pushing? can we have been pushing? can you have been pushing? can they have been pushing?
Forma interro-negativa
Forma simple
can't I push? can't you push? can't she push? can't we push? can't you push? can't they push?
Forma con V-ing
can't I be pushing? can't you be pushing? can't she be pushing? can't we be pushing? can't you be pushing? can't they be pushing?
Perfecto
can't I have pushed? can't you have pushed? can't she have pushed? can't we have pushed? can't you have pushed? can't they have pushed?
Perfecto con V-ing
can't I have been pushing? can't you have been pushing? can't she have been pushing? can't we have been pushing? can't you have been pushing? can't they have been pushing?