English verb conjugation
CAN TUNNEL

Regular verb: tunnel - tunnelled - tunnelled

Affirmation

Simple form	V-ing form
I can tunnel you can tunnel she can tunnel we can tunnel you can tunnel they can tunnel	I can be tunnelling you can be tunnelling she can be tunnelling we can be tunnelling you can be tunnelling they can be tunnelling
Perfect	V-ing perfect
I can have tunnelled you can have tunnelled she can have tunnelled we can have tunnelled you can have tunnelled they can have tunnelled	I can have been tunnelling you can have been tunnelling she can have been tunnelling we can have been tunnelling you can have been tunnelling they can have been tunnelling

Negation

Simple form	V-ing form
I can't tunnel you can't tunnel she can't tunnel we can't tunnel you can't tunnel they can't tunnel	I can't be tunnelling you can't be tunnelling she can't be tunnelling we can't be tunnelling you can't be tunnelling they can't be tunnelling
Perfect	V-ing perfect
I can't have tunnelled you can't have tunnelled she can't have tunnelled we can't have tunnelled you can't have tunnelled they can't have tunnelled	I can't have been tunnelling you can't have been tunnelling she can't have been tunnelling we can't have been tunnelling you can't have been tunnelling they can't have been tunnelling

Interrogative form

Simple form	V-ing form
can I tunnel? can you tunnel? can she tunnel? can we tunnel? can you tunnel? can they tunnel?	can I be tunnelling? can you be tunnelling? can she be tunnelling? can we be tunnelling? can you be tunnelling? can they be tunnelling?
Perfect	V-ing perfect
can I have tunnelled? can you have tunnelled? can she have tunnelled? can we have tunnelled? can you have tunnelled? can they have tunnelled?	can I have been tunnelling? can you have been tunnelling? can she have been tunnelling? can we have been tunnelling? can you have been tunnelling? can they have been tunnelling?

Interro-negative form

Simple form	V-ing form
can't I tunnel? can't you tunnel? can't she tunnel? can't we tunnel? can't you tunnel? can't they tunnel?	can't I be tunnelling? can't you be tunnelling? can't she be tunnelling? can't we be tunnelling? can't you be tunnelling? can't they be tunnelling?
Perfect	V-ing perfect
can't I have tunnelled? can't you have tunnelled? can't she have tunnelled? can't we have tunnelled? can't you have tunnelled? can't they have tunnelled?	can't I have been tunnelling? can't you have been tunnelling? can't she have been tunnelling? can't we have been tunnelling? can't you have been tunnelling? can't they have been tunnelling?