English verb conjugation
CAN CRY

Regular verb: cry - cried - cried

Affirmation

Simple form	V-ing form
I can cry you can cry he can cry we can cry you can cry they can cry	I can be crying you can be crying he can be crying we can be crying you can be crying they can be crying
Perfect	V-ing perfect
I can have cried you can have cried he can have cried we can have cried you can have cried they can have cried	I can have been crying you can have been crying he can have been crying we can have been crying you can have been crying they can have been crying

Negation

Simple form	V-ing form
I can't cry you can't cry he can't cry we can't cry you can't cry they can't cry	I can't be crying you can't be crying he can't be crying we can't be crying you can't be crying they can't be crying
Perfect	V-ing perfect
I can't have cried you can't have cried he can't have cried we can't have cried you can't have cried they can't have cried	I can't have been crying you can't have been crying he can't have been crying we can't have been crying you can't have been crying they can't have been crying

Interrogative form

Simple form	V-ing form
can I cry? can you cry? can he cry? can we cry? can you cry? can they cry?	can I be crying? can you be crying? can he be crying? can we be crying? can you be crying? can they be crying?
Perfect	V-ing perfect
can I have cried? can you have cried? can he have cried? can we have cried? can you have cried? can they have cried?	can I have been crying? can you have been crying? can he have been crying? can we have been crying? can you have been crying? can they have been crying?

Interro-negative form

Simple form	V-ing form
can't I cry? can't you cry? can't he cry? can't we cry? can't you cry? can't they cry?	can't I be crying? can't you be crying? can't he be crying? can't we be crying? can't you be crying? can't they be crying?
Perfect	V-ing perfect
can't I have cried? can't you have cried? can't he have cried? can't we have cried? can't you have cried? can't they have cried?	can't I have been crying? can't you have been crying? can't he have been crying? can't we have been crying? can't you have been crying? can't they have been crying?