English verb conjugation
CAN CRUSADE

Regular verb: crusade - crusaded - crusaded

Affirmation

Simple form	V-ing form
I can crusade you can crusade he can crusade we can crusade you can crusade they can crusade	I can be crusading you can be crusading he can be crusading we can be crusading you can be crusading they can be crusading
Perfect	V-ing perfect
I can have crusaded you can have crusaded he can have crusaded we can have crusaded you can have crusaded they can have crusaded	I can have been crusading you can have been crusading he can have been crusading we can have been crusading you can have been crusading they can have been crusading

Negation

Simple form	V-ing form
I can't crusade you can't crusade he can't crusade we can't crusade you can't crusade they can't crusade	I can't be crusading you can't be crusading he can't be crusading we can't be crusading you can't be crusading they can't be crusading
Perfect	V-ing perfect
I can't have crusaded you can't have crusaded he can't have crusaded we can't have crusaded you can't have crusaded they can't have crusaded	I can't have been crusading you can't have been crusading he can't have been crusading we can't have been crusading you can't have been crusading they can't have been crusading

Interrogative form

Simple form	V-ing form
can I crusade? can you crusade? can he crusade? can we crusade? can you crusade? can they crusade?	can I be crusading? can you be crusading? can he be crusading? can we be crusading? can you be crusading? can they be crusading?
Perfect	V-ing perfect
can I have crusaded? can you have crusaded? can he have crusaded? can we have crusaded? can you have crusaded? can they have crusaded?	can I have been crusading? can you have been crusading? can he have been crusading? can we have been crusading? can you have been crusading? can they have been crusading?

Interro-negative form

Simple form	V-ing form
can't I crusade? can't you crusade? can't he crusade? can't we crusade? can't you crusade? can't they crusade?	can't I be crusading? can't you be crusading? can't he be crusading? can't we be crusading? can't you be crusading? can't they be crusading?
Perfect	V-ing perfect
can't I have crusaded? can't you have crusaded? can't he have crusaded? can't we have crusaded? can't you have crusaded? can't they have crusaded?	can't I have been crusading? can't you have been crusading? can't he have been crusading? can't we have been crusading? can't you have been crusading? can't they have been crusading?