I can litter you can litter she can litter we can litter you can litter they can litter
Forma con V-ing
I can be littering you can be littering she can be littering we can be littering you can be littering they can be littering
Perfecto
I can have littered you can have littered she can have littered we can have littered you can have littered they can have littered
Perfecto con V-ing
I can have been littering you can have been littering she can have been littering we can have been littering you can have been littering they can have been littering
Negación
Forma simple
I can't litter you can't litter she can't litter we can't litter you can't litter they can't litter
Forma con V-ing
I can't be littering you can't be littering she can't be littering we can't be littering you can't be littering they can't be littering
Perfecto
I can't have littered you can't have littered she can't have littered we can't have littered you can't have littered they can't have littered
Perfecto con V-ing
I can't have been littering you can't have been littering she can't have been littering we can't have been littering you can't have been littering they can't have been littering
Forma interrogativa
Forma simple
can I litter? can you litter? can she litter? can we litter? can you litter? can they litter?
Forma con V-ing
can I be littering? can you be littering? can she be littering? can we be littering? can you be littering? can they be littering?
Perfecto
can I have littered? can you have littered? can she have littered? can we have littered? can you have littered? can they have littered?
Perfecto con V-ing
can I have been littering? can you have been littering? can she have been littering? can we have been littering? can you have been littering? can they have been littering?
Forma interro-negativa
Forma simple
can't I litter? can't you litter? can't she litter? can't we litter? can't you litter? can't they litter?
Forma con V-ing
can't I be littering? can't you be littering? can't she be littering? can't we be littering? can't you be littering? can't they be littering?
Perfecto
can't I have littered? can't you have littered? can't she have littered? can't we have littered? can't you have littered? can't they have littered?
Perfecto con V-ing
can't I have been littering? can't you have been littering? can't she have been littering? can't we have been littering? can't you have been littering? can't they have been littering?