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 couldn't outsing you couldn't outsing he couldn't outsing we couldn't outsing you couldn't outsing they couldn't outsing	I couldn't be outsinging you couldn't be outsinging he couldn't be outsinging we couldn't be outsinging you couldn't be outsinging they couldn't be outsinging
Perfect	V-ing perfect
I couldn't have outsung you couldn't have outsung he couldn't have outsung we couldn't have outsung you couldn't have outsung they couldn't have outsung	I couldn't have been outsinging you couldn't have been outsinging he couldn't have been outsinging we couldn't have been outsinging you couldn't have been outsinging they couldn't 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
couldn't I outsing? couldn't you outsing? couldn't he outsing? couldn't we outsing? couldn't you outsing? couldn't they outsing?	couldn't I be outsinging? couldn't you be outsinging? couldn't he be outsinging? couldn't we be outsinging? couldn't you be outsinging? couldn't they be outsinging?
Perfect	V-ing perfect
couldn't I have outsung? couldn't you have outsung? couldn't he have outsung? couldn't we have outsung? couldn't you have outsung? couldn't they have outsung?	couldn't I have been outsinging? couldn't you have been outsinging? couldn't he have been outsinging? couldn't we have been outsinging? couldn't you have been outsinging? couldn't they have been outsinging?