English verb conjugation
COULD SELLOTAPE

Regular verb: sellotape - sellotaped - sellotaped

Affirmation

Simple form	V-ing form
I could sellotape you could sellotape he could sellotape we could sellotape you could sellotape they could sellotape	I could be sellotaping you could be sellotaping he could be sellotaping we could be sellotaping you could be sellotaping they could be sellotaping
Perfect	V-ing perfect
I could have sellotaped you could have sellotaped he could have sellotaped we could have sellotaped you could have sellotaped they could have sellotaped	I could have been sellotaping you could have been sellotaping he could have been sellotaping we could have been sellotaping you could have been sellotaping they could have been sellotaping

Negation

Simple form	V-ing form
I could not sellotape you could not sellotape he could not sellotape we could not sellotape you could not sellotape they could not sellotape	I could not be sellotaping you could not be sellotaping he could not be sellotaping we could not be sellotaping you could not be sellotaping they could not be sellotaping
Perfect	V-ing perfect
I could not have sellotaped you could not have sellotaped he could not have sellotaped we could not have sellotaped you could not have sellotaped they could not have sellotaped	I could not have been sellotaping you could not have been sellotaping he could not have been sellotaping we could not have been sellotaping you could not have been sellotaping they could not have been sellotaping

Interrogative form

Simple form	V-ing form
could I sellotape? could you sellotape? could he sellotape? could we sellotape? could you sellotape? could they sellotape?	could I be sellotaping? could you be sellotaping? could he be sellotaping? could we be sellotaping? could you be sellotaping? could they be sellotaping?
Perfect	V-ing perfect
could I have sellotaped? could you have sellotaped? could he have sellotaped? could we have sellotaped? could you have sellotaped? could they have sellotaped?	could I have been sellotaping? could you have been sellotaping? could he have been sellotaping? could we have been sellotaping? could you have been sellotaping? could they have been sellotaping?

Interro-negative form

Simple form	V-ing form
could I not sellotape? could you not sellotape? could he not sellotape? could we not sellotape? could you not sellotape? could they not sellotape?	could I not be sellotaping? could you not be sellotaping? could he not be sellotaping? could we not be sellotaping? could you not be sellotaping? could they not be sellotaping?
Perfect	V-ing perfect
could I not have sellotaped? could you not have sellotaped? could he not have sellotaped? could we not have sellotaped? could you not have sellotaped? could they not have sellotaped?	could I not have been sellotaping? could you not have been sellotaping? could he not have been sellotaping? could we not have been sellotaping? could you not have been sellotaping? could they not have been sellotaping?