English verb conjugation
CAN LISTEN

Regular verb: listen - listened - listened

Affirmation

Simple form	V-ing form
I can listen you can listen he can listen we can listen you can listen they can listen	I can be listening you can be listening he can be listening we can be listening you can be listening they can be listening
Perfect	V-ing perfect
I can have listened you can have listened he can have listened we can have listened you can have listened they can have listened	I can have been listening you can have been listening he can have been listening we can have been listening you can have been listening they can have been listening

Negation

Simple form	V-ing form
I can't listen you can't listen he can't listen we can't listen you can't listen they can't listen	I can't be listening you can't be listening he can't be listening we can't be listening you can't be listening they can't be listening
Perfect	V-ing perfect
I can't have listened you can't have listened he can't have listened we can't have listened you can't have listened they can't have listened	I can't have been listening you can't have been listening he can't have been listening we can't have been listening you can't have been listening they can't have been listening

Interrogative form

Simple form	V-ing form
can I listen? can you listen? can he listen? can we listen? can you listen? can they listen?	can I be listening? can you be listening? can he be listening? can we be listening? can you be listening? can they be listening?
Perfect	V-ing perfect
can I have listened? can you have listened? can he have listened? can we have listened? can you have listened? can they have listened?	can I have been listening? can you have been listening? can he have been listening? can we have been listening? can you have been listening? can they have been listening?

Interro-negative form

Simple form	V-ing form
can't I listen? can't you listen? can't he listen? can't we listen? can't you listen? can't they listen?	can't I be listening? can't you be listening? can't he be listening? can't we be listening? can't you be listening? can't they be listening?
Perfect	V-ing perfect
can't I have listened? can't you have listened? can't he have listened? can't we have listened? can't you have listened? can't they have listened?	can't I have been listening? can't you have been listening? can't he have been listening? can't we have been listening? can't you have been listening? can't they have been listening?