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 cannot crusade you cannot crusade he cannot crusade we cannot crusade you cannot crusade they cannot crusade	I cannot be crusading you cannot be crusading he cannot be crusading we cannot be crusading you cannot be crusading they cannot be crusading
Perfect	V-ing perfect
I cannot have crusaded you cannot have crusaded he cannot have crusaded we cannot have crusaded you cannot have crusaded they cannot have crusaded	I cannot have been crusading you cannot have been crusading he cannot have been crusading we cannot have been crusading you cannot have been crusading they cannot 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 I not crusade? can you not crusade? can he not crusade? can we not crusade? can you not crusade? can they not crusade?	can I not be crusading? can you not be crusading? can he not be crusading? can we not be crusading? can you not be crusading? can they not be crusading?
Perfect	V-ing perfect
can I not have crusaded? can you not have crusaded? can he not have crusaded? can we not have crusaded? can you not have crusaded? can they not have crusaded?	can I not have been crusading? can you not have been crusading? can he not have been crusading? can we not have been crusading? can you not have been crusading? can they not have been crusading?