English verb conjugation
COULD OUTSING

Irregular verb: outsing - outsang - outsung

Affirmation

Simple form	V-ing form
I could outsing you could outsing he could outsing we could outsing you could outsing they could outsing	I could be outsinging you could be outsinging he could be outsinging we could be outsinging you could be outsinging they could be outsinging
Perfect	V-ing perfect
I could have outsung you could have outsung he could have outsung we could have outsung you could have outsung they could have outsung	I could have been outsinging you could have been outsinging he could have been outsinging we could have been outsinging you could have been outsinging they could have been outsinging

Negation

Simple form	V-ing form
I could not outsing you could not outsing he could not outsing we could not outsing you could not outsing they could not outsing	I could not be outsinging you could not be outsinging he could not be outsinging we could not be outsinging you could not be outsinging they could not be outsinging
Perfect	V-ing perfect
I could not have outsung you could not have outsung he could not have outsung we could not have outsung you could not have outsung they could not have outsung	I could not have been outsinging you could not have been outsinging he could not have been outsinging we could not have been outsinging you could not have been outsinging they could not have been outsinging

Interrogative form

Simple form	V-ing form
could I outsing? could you outsing? could he outsing? could we outsing? could you outsing? could they outsing?	could I be outsinging? could you be outsinging? could he be outsinging? could we be outsinging? could you be outsinging? could they be outsinging?
Perfect	V-ing perfect
could I have outsung? could you have outsung? could he have outsung? could we have outsung? could you have outsung? could they have outsung?	could I have been outsinging? could you have been outsinging? could he have been outsinging? could we have been outsinging? could you have been outsinging? could they have been outsinging?

Interro-negative form

Simple form	V-ing form
could I not outsing? could you not outsing? could he not outsing? could we not outsing? could you not outsing? could they not outsing?	could I not be outsinging? could you not be outsinging? could he not be outsinging? could we not be outsinging? could you not be outsinging? could they not be outsinging?
Perfect	V-ing perfect
could I not have outsung? could you not have outsung? could he not have outsung? could we not have outsung? could you not have outsung? could they not have outsung?	could I not have been outsinging? could you not have been outsinging? could he not have been outsinging? could we not have been outsinging? could you not have been outsinging? could they not have been outsinging?