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