English verb conjugation
CAN PLUG

Regular verb: plug - plugged - plugged

Affirmation

Simple form	V-ing form
I can plug you can plug he can plug we can plug you can plug they can plug	I can be plugging you can be plugging he can be plugging we can be plugging you can be plugging they can be plugging
Perfect	V-ing perfect
I can have plugged you can have plugged he can have plugged we can have plugged you can have plugged they can have plugged	I can have been plugging you can have been plugging he can have been plugging we can have been plugging you can have been plugging they can have been plugging

Negation

Simple form	V-ing form
I can't plug you can't plug he can't plug we can't plug you can't plug they can't plug	I can't be plugging you can't be plugging he can't be plugging we can't be plugging you can't be plugging they can't be plugging
Perfect	V-ing perfect
I can't have plugged you can't have plugged he can't have plugged we can't have plugged you can't have plugged they can't have plugged	I can't have been plugging you can't have been plugging he can't have been plugging we can't have been plugging you can't have been plugging they can't have been plugging

Interrogative form

Simple form	V-ing form
can I plug? can you plug? can he plug? can we plug? can you plug? can they plug?	can I be plugging? can you be plugging? can he be plugging? can we be plugging? can you be plugging? can they be plugging?
Perfect	V-ing perfect
can I have plugged? can you have plugged? can he have plugged? can we have plugged? can you have plugged? can they have plugged?	can I have been plugging? can you have been plugging? can he have been plugging? can we have been plugging? can you have been plugging? can they have been plugging?

Interro-negative form

Simple form	V-ing form
can't I plug? can't you plug? can't he plug? can't we plug? can't you plug? can't they plug?	can't I be plugging? can't you be plugging? can't he be plugging? can't we be plugging? can't you be plugging? can't they be plugging?
Perfect	V-ing perfect
can't I have plugged? can't you have plugged? can't he have plugged? can't we have plugged? can't you have plugged? can't they have plugged?	can't I have been plugging? can't you have been plugging? can't he have been plugging? can't we have been plugging? can't you have been plugging? can't they have been plugging?