English verb conjugation
CAN WHISPER

Regular verb: whisper - whispered - whispered

Affirmation

Simple form	V-ing form
I can whisper you can whisper he can whisper we can whisper you can whisper they can whisper	I can be whispering you can be whispering he can be whispering we can be whispering you can be whispering they can be whispering
Perfect	V-ing perfect
I can have whispered you can have whispered he can have whispered we can have whispered you can have whispered they can have whispered	I can have been whispering you can have been whispering he can have been whispering we can have been whispering you can have been whispering they can have been whispering

Negation

Simple form	V-ing form
I can't whisper you can't whisper he can't whisper we can't whisper you can't whisper they can't whisper	I can't be whispering you can't be whispering he can't be whispering we can't be whispering you can't be whispering they can't be whispering
Perfect	V-ing perfect
I can't have whispered you can't have whispered he can't have whispered we can't have whispered you can't have whispered they can't have whispered	I can't have been whispering you can't have been whispering he can't have been whispering we can't have been whispering you can't have been whispering they can't have been whispering

Interrogative form

Simple form	V-ing form
can I whisper? can you whisper? can he whisper? can we whisper? can you whisper? can they whisper?	can I be whispering? can you be whispering? can he be whispering? can we be whispering? can you be whispering? can they be whispering?
Perfect	V-ing perfect
can I have whispered? can you have whispered? can he have whispered? can we have whispered? can you have whispered? can they have whispered?	can I have been whispering? can you have been whispering? can he have been whispering? can we have been whispering? can you have been whispering? can they have been whispering?

Interro-negative form

Simple form	V-ing form
can't I whisper? can't you whisper? can't he whisper? can't we whisper? can't you whisper? can't they whisper?	can't I be whispering? can't you be whispering? can't he be whispering? can't we be whispering? can't you be whispering? can't they be whispering?
Perfect	V-ing perfect
can't I have whispered? can't you have whispered? can't he have whispered? can't we have whispered? can't you have whispered? can't they have whispered?	can't I have been whispering? can't you have been whispering? can't he have been whispering? can't we have been whispering? can't you have been whispering? can't they have been whispering?