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 couldn't sellotape you couldn't sellotape he couldn't sellotape we couldn't sellotape you couldn't sellotape they couldn't sellotape	I couldn't be sellotaping you couldn't be sellotaping he couldn't be sellotaping we couldn't be sellotaping you couldn't be sellotaping they couldn't be sellotaping
Perfect	V-ing perfect
I couldn't have sellotaped you couldn't have sellotaped he couldn't have sellotaped we couldn't have sellotaped you couldn't have sellotaped they couldn't have sellotaped	I couldn't have been sellotaping you couldn't have been sellotaping he couldn't have been sellotaping we couldn't have been sellotaping you couldn't have been sellotaping they couldn't 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
couldn't I sellotape? couldn't you sellotape? couldn't he sellotape? couldn't we sellotape? couldn't you sellotape? couldn't they sellotape?	couldn't I be sellotaping? couldn't you be sellotaping? couldn't he be sellotaping? couldn't we be sellotaping? couldn't you be sellotaping? couldn't they be sellotaping?
Perfect	V-ing perfect
couldn't I have sellotaped? couldn't you have sellotaped? couldn't he have sellotaped? couldn't we have sellotaped? couldn't you have sellotaped? couldn't they have sellotaped?	couldn't I have been sellotaping? couldn't you have been sellotaping? couldn't he have been sellotaping? couldn't we have been sellotaping? couldn't you have been sellotaping? couldn't they have been sellotaping?