English verb conjugation
CAN PARENTHESIZE

Regular verb: parenthesize - parenthesized - parenthesized

Affirmation

Simple form	V-ing form
I can parenthesize you can parenthesize he can parenthesize we can parenthesize you can parenthesize they can parenthesize	I can be parenthesizing you can be parenthesizing he can be parenthesizing we can be parenthesizing you can be parenthesizing they can be parenthesizing
Perfect	V-ing perfect
I can have parenthesized you can have parenthesized he can have parenthesized we can have parenthesized you can have parenthesized they can have parenthesized	I can have been parenthesizing you can have been parenthesizing he can have been parenthesizing we can have been parenthesizing you can have been parenthesizing they can have been parenthesizing

Negation

Simple form	V-ing form
I can't parenthesize you can't parenthesize he can't parenthesize we can't parenthesize you can't parenthesize they can't parenthesize	I can't be parenthesizing you can't be parenthesizing he can't be parenthesizing we can't be parenthesizing you can't be parenthesizing they can't be parenthesizing
Perfect	V-ing perfect
I can't have parenthesized you can't have parenthesized he can't have parenthesized we can't have parenthesized you can't have parenthesized they can't have parenthesized	I can't have been parenthesizing you can't have been parenthesizing he can't have been parenthesizing we can't have been parenthesizing you can't have been parenthesizing they can't have been parenthesizing

Interrogative form

Simple form	V-ing form
can I parenthesize? can you parenthesize? can he parenthesize? can we parenthesize? can you parenthesize? can they parenthesize?	can I be parenthesizing? can you be parenthesizing? can he be parenthesizing? can we be parenthesizing? can you be parenthesizing? can they be parenthesizing?
Perfect	V-ing perfect
can I have parenthesized? can you have parenthesized? can he have parenthesized? can we have parenthesized? can you have parenthesized? can they have parenthesized?	can I have been parenthesizing? can you have been parenthesizing? can he have been parenthesizing? can we have been parenthesizing? can you have been parenthesizing? can they have been parenthesizing?

Interro-negative form

Simple form	V-ing form
can't I parenthesize? can't you parenthesize? can't he parenthesize? can't we parenthesize? can't you parenthesize? can't they parenthesize?	can't I be parenthesizing? can't you be parenthesizing? can't he be parenthesizing? can't we be parenthesizing? can't you be parenthesizing? can't they be parenthesizing?
Perfect	V-ing perfect
can't I have parenthesized? can't you have parenthesized? can't he have parenthesized? can't we have parenthesized? can't you have parenthesized? can't they have parenthesized?	can't I have been parenthesizing? can't you have been parenthesizing? can't he have been parenthesizing? can't we have been parenthesizing? can't you have been parenthesizing? can't they have been parenthesizing?