English verb conjugation
CAN SCALE

Regular verb: scale - scaled - scaled

Affirmation

Simple form	V-ing form
I can scale you can scale she can scale we can scale you can scale they can scale	I can be scaling you can be scaling she can be scaling we can be scaling you can be scaling they can be scaling
Perfect	V-ing perfect
I can have scaled you can have scaled she can have scaled we can have scaled you can have scaled they can have scaled	I can have been scaling you can have been scaling she can have been scaling we can have been scaling you can have been scaling they can have been scaling

Negation

Simple form	V-ing form
I can't scale you can't scale she can't scale we can't scale you can't scale they can't scale	I can't be scaling you can't be scaling she can't be scaling we can't be scaling you can't be scaling they can't be scaling
Perfect	V-ing perfect
I can't have scaled you can't have scaled she can't have scaled we can't have scaled you can't have scaled they can't have scaled	I can't have been scaling you can't have been scaling she can't have been scaling we can't have been scaling you can't have been scaling they can't have been scaling

Interrogative form

Simple form	V-ing form
can I scale? can you scale? can she scale? can we scale? can you scale? can they scale?	can I be scaling? can you be scaling? can she be scaling? can we be scaling? can you be scaling? can they be scaling?
Perfect	V-ing perfect
can I have scaled? can you have scaled? can she have scaled? can we have scaled? can you have scaled? can they have scaled?	can I have been scaling? can you have been scaling? can she have been scaling? can we have been scaling? can you have been scaling? can they have been scaling?

Interro-negative form

Simple form	V-ing form
can't I scale? can't you scale? can't she scale? can't we scale? can't you scale? can't they scale?	can't I be scaling? can't you be scaling? can't she be scaling? can't we be scaling? can't you be scaling? can't they be scaling?
Perfect	V-ing perfect
can't I have scaled? can't you have scaled? can't she have scaled? can't we have scaled? can't you have scaled? can't they have scaled?	can't I have been scaling? can't you have been scaling? can't she have been scaling? can't we have been scaling? can't you have been scaling? can't they have been scaling?