English verb conjugation
CAN CUSTOMIZE

Regular verb: customize - customized - customized

Affirmation

Simple form	V-ing form
I can customize you can customize she can customize we can customize you can customize they can customize	I can be customizing you can be customizing she can be customizing we can be customizing you can be customizing they can be customizing
Perfect	V-ing perfect
I can have customized you can have customized she can have customized we can have customized you can have customized they can have customized	I can have been customizing you can have been customizing she can have been customizing we can have been customizing you can have been customizing they can have been customizing

Negation

Simple form	V-ing form
I can't customize you can't customize she can't customize we can't customize you can't customize they can't customize	I can't be customizing you can't be customizing she can't be customizing we can't be customizing you can't be customizing they can't be customizing
Perfect	V-ing perfect
I can't have customized you can't have customized she can't have customized we can't have customized you can't have customized they can't have customized	I can't have been customizing you can't have been customizing she can't have been customizing we can't have been customizing you can't have been customizing they can't have been customizing

Interrogative form

Simple form	V-ing form
can I customize? can you customize? can she customize? can we customize? can you customize? can they customize?	can I be customizing? can you be customizing? can she be customizing? can we be customizing? can you be customizing? can they be customizing?
Perfect	V-ing perfect
can I have customized? can you have customized? can she have customized? can we have customized? can you have customized? can they have customized?	can I have been customizing? can you have been customizing? can she have been customizing? can we have been customizing? can you have been customizing? can they have been customizing?

Interro-negative form

Simple form	V-ing form
can't I customize? can't you customize? can't she customize? can't we customize? can't you customize? can't they customize?	can't I be customizing? can't you be customizing? can't she be customizing? can't we be customizing? can't you be customizing? can't they be customizing?
Perfect	V-ing perfect
can't I have customized? can't you have customized? can't she have customized? can't we have customized? can't you have customized? can't they have customized?	can't I have been customizing? can't you have been customizing? can't she have been customizing? can't we have been customizing? can't you have been customizing? can't they have been customizing?