English verb conjugation
COULD TONGUE

Regular verb: tongue - tongued - tongued

Affirmation

Simple form	V-ing form
I could tongue you could tongue he could tongue we could tongue you could tongue they could tongue	I could be tonguing you could be tonguing he could be tonguing we could be tonguing you could be tonguing they could be tonguing
Perfect	V-ing perfect
I could have tongued you could have tongued he could have tongued we could have tongued you could have tongued they could have tongued	I could have been tonguing you could have been tonguing he could have been tonguing we could have been tonguing you could have been tonguing they could have been tonguing

Negation

Simple form	V-ing form
I could not tongue you could not tongue he could not tongue we could not tongue you could not tongue they could not tongue	I could not be tonguing you could not be tonguing he could not be tonguing we could not be tonguing you could not be tonguing they could not be tonguing
Perfect	V-ing perfect
I could not have tongued you could not have tongued he could not have tongued we could not have tongued you could not have tongued they could not have tongued	I could not have been tonguing you could not have been tonguing he could not have been tonguing we could not have been tonguing you could not have been tonguing they could not have been tonguing

Interrogative form

Simple form	V-ing form
could I tongue? could you tongue? could he tongue? could we tongue? could you tongue? could they tongue?	could I be tonguing? could you be tonguing? could he be tonguing? could we be tonguing? could you be tonguing? could they be tonguing?
Perfect	V-ing perfect
could I have tongued? could you have tongued? could he have tongued? could we have tongued? could you have tongued? could they have tongued?	could I have been tonguing? could you have been tonguing? could he have been tonguing? could we have been tonguing? could you have been tonguing? could they have been tonguing?

Interro-negative form

Simple form	V-ing form
could I not tongue? could you not tongue? could he not tongue? could we not tongue? could you not tongue? could they not tongue?	could I not be tonguing? could you not be tonguing? could he not be tonguing? could we not be tonguing? could you not be tonguing? could they not be tonguing?
Perfect	V-ing perfect
could I not have tongued? could you not have tongued? could he not have tongued? could we not have tongued? could you not have tongued? could they not have tongued?	could I not have been tonguing? could you not have been tonguing? could he not have been tonguing? could we not have been tonguing? could you not have been tonguing? could they not have been tonguing?