English verb conjugation
COULD INTONATE

Regular verb: intonate - intonated - intonated

Affirmation

Simple form	V-ing form
I could intonate you could intonate he could intonate we could intonate you could intonate they could intonate	I could be intonating you could be intonating he could be intonating we could be intonating you could be intonating they could be intonating
Perfect	V-ing perfect
I could have intonated you could have intonated he could have intonated we could have intonated you could have intonated they could have intonated	I could have been intonating you could have been intonating he could have been intonating we could have been intonating you could have been intonating they could have been intonating

Negation

Simple form	V-ing form
I could not intonate you could not intonate he could not intonate we could not intonate you could not intonate they could not intonate	I could not be intonating you could not be intonating he could not be intonating we could not be intonating you could not be intonating they could not be intonating
Perfect	V-ing perfect
I could not have intonated you could not have intonated he could not have intonated we could not have intonated you could not have intonated they could not have intonated	I could not have been intonating you could not have been intonating he could not have been intonating we could not have been intonating you could not have been intonating they could not have been intonating

Interrogative form

Simple form	V-ing form
could I intonate? could you intonate? could he intonate? could we intonate? could you intonate? could they intonate?	could I be intonating? could you be intonating? could he be intonating? could we be intonating? could you be intonating? could they be intonating?
Perfect	V-ing perfect
could I have intonated? could you have intonated? could he have intonated? could we have intonated? could you have intonated? could they have intonated?	could I have been intonating? could you have been intonating? could he have been intonating? could we have been intonating? could you have been intonating? could they have been intonating?

Interro-negative form

Simple form	V-ing form
could I not intonate? could you not intonate? could he not intonate? could we not intonate? could you not intonate? could they not intonate?	could I not be intonating? could you not be intonating? could he not be intonating? could we not be intonating? could you not be intonating? could they not be intonating?
Perfect	V-ing perfect
could I not have intonated? could you not have intonated? could he not have intonated? could we not have intonated? could you not have intonated? could they not have intonated?	could I not have been intonating? could you not have been intonating? could he not have been intonating? could we not have been intonating? could you not have been intonating? could they not have been intonating?