English verb conjugation
CAN UNDERLOAD

Regular verb: underload - underloaded - underloaded

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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