English verb conjugation
COULD UNDERLOAD

Regular verb: underload - underloaded - underloaded

Affirmation

Simple form	V-ing form
I could underload you could underload she could underload we could underload you could underload they could underload	I could be underloading you could be underloading she could be underloading we could be underloading you could be underloading they could be underloading
Perfect	V-ing perfect
I could have underloaded you could have underloaded she could have underloaded we could have underloaded you could have underloaded they could have underloaded	I could have been underloading you could have been underloading she could have been underloading we could have been underloading you could have been underloading they could have been underloading

Negation

Simple form	V-ing form
I couldn't underload you couldn't underload she couldn't underload we couldn't underload you couldn't underload they couldn't underload	I couldn't be underloading you couldn't be underloading she couldn't be underloading we couldn't be underloading you couldn't be underloading they couldn't be underloading
Perfect	V-ing perfect
I couldn't have underloaded you couldn't have underloaded she couldn't have underloaded we couldn't have underloaded you couldn't have underloaded they couldn't have underloaded	I couldn't have been underloading you couldn't have been underloading she couldn't have been underloading we couldn't have been underloading you couldn't have been underloading they couldn't have been underloading

Interrogative form

Simple form	V-ing form
could I underload? could you underload? could she underload? could we underload? could you underload? could they underload?	could I be underloading? could you be underloading? could she be underloading? could we be underloading? could you be underloading? could they be underloading?
Perfect	V-ing perfect
could I have underloaded? could you have underloaded? could she have underloaded? could we have underloaded? could you have underloaded? could they have underloaded?	could I have been underloading? could you have been underloading? could she have been underloading? could we have been underloading? could you have been underloading? could they have been underloading?

Interro-negative form

Simple form	V-ing form
couldn't I underload? couldn't you underload? couldn't she underload? couldn't we underload? couldn't you underload? couldn't they underload?	couldn't I be underloading? couldn't you be underloading? couldn't she be underloading? couldn't we be underloading? couldn't you be underloading? couldn't they be underloading?
Perfect	V-ing perfect
couldn't I have underloaded? couldn't you have underloaded? couldn't she have underloaded? couldn't we have underloaded? couldn't you have underloaded? couldn't they have underloaded?	couldn't I have been underloading? couldn't you have been underloading? couldn't she have been underloading? couldn't we have been underloading? couldn't you have been underloading? couldn't they have been underloading?