English verb conjugation
CAN SOUND

Regular verb: sound - sounded - sounded

Affirmation

Simple form	V-ing form
I can sound you can sound he can sound we can sound you can sound they can sound	I can be sounding you can be sounding he can be sounding we can be sounding you can be sounding they can be sounding
Perfect	V-ing perfect
I can have sounded you can have sounded he can have sounded we can have sounded you can have sounded they can have sounded	I can have been sounding you can have been sounding he can have been sounding we can have been sounding you can have been sounding they can have been sounding

Negation

Simple form	V-ing form
I cannot sound you cannot sound he cannot sound we cannot sound you cannot sound they cannot sound	I cannot be sounding you cannot be sounding he cannot be sounding we cannot be sounding you cannot be sounding they cannot be sounding
Perfect	V-ing perfect
I cannot have sounded you cannot have sounded he cannot have sounded we cannot have sounded you cannot have sounded they cannot have sounded	I cannot have been sounding you cannot have been sounding he cannot have been sounding we cannot have been sounding you cannot have been sounding they cannot have been sounding

Interrogative form

Simple form	V-ing form
can I sound? can you sound? can he sound? can we sound? can you sound? can they sound?	can I be sounding? can you be sounding? can he be sounding? can we be sounding? can you be sounding? can they be sounding?
Perfect	V-ing perfect
can I have sounded? can you have sounded? can he have sounded? can we have sounded? can you have sounded? can they have sounded?	can I have been sounding? can you have been sounding? can he have been sounding? can we have been sounding? can you have been sounding? can they have been sounding?

Interro-negative form

Simple form	V-ing form
can I not sound? can you not sound? can he not sound? can we not sound? can you not sound? can they not sound?	can I not be sounding? can you not be sounding? can he not be sounding? can we not be sounding? can you not be sounding? can they not be sounding?
Perfect	V-ing perfect
can I not have sounded? can you not have sounded? can he not have sounded? can we not have sounded? can you not have sounded? can they not have sounded?	can I not have been sounding? can you not have been sounding? can he not have been sounding? can we not have been sounding? can you not have been sounding? can they not have been sounding?