English verb conjugation
CAN INVADE

Regular verb: invade - invaded - invaded

Affirmation

Simple form	V-ing form
I can invade you can invade she can invade we can invade you can invade they can invade	I can be invading you can be invading she can be invading we can be invading you can be invading they can be invading
Perfect	V-ing perfect
I can have invaded you can have invaded she can have invaded we can have invaded you can have invaded they can have invaded	I can have been invading you can have been invading she can have been invading we can have been invading you can have been invading they can have been invading

Negation

Simple form	V-ing form
I cannot invade you cannot invade she cannot invade we cannot invade you cannot invade they cannot invade	I cannot be invading you cannot be invading she cannot be invading we cannot be invading you cannot be invading they cannot be invading
Perfect	V-ing perfect
I cannot have invaded you cannot have invaded she cannot have invaded we cannot have invaded you cannot have invaded they cannot have invaded	I cannot have been invading you cannot have been invading she cannot have been invading we cannot have been invading you cannot have been invading they cannot have been invading

Interrogative form

Simple form	V-ing form
can I invade? can you invade? can she invade? can we invade? can you invade? can they invade?	can I be invading? can you be invading? can she be invading? can we be invading? can you be invading? can they be invading?
Perfect	V-ing perfect
can I have invaded? can you have invaded? can she have invaded? can we have invaded? can you have invaded? can they have invaded?	can I have been invading? can you have been invading? can she have been invading? can we have been invading? can you have been invading? can they have been invading?

Interro-negative form

Simple form	V-ing form
can I not invade? can you not invade? can she not invade? can we not invade? can you not invade? can they not invade?	can I not be invading? can you not be invading? can she not be invading? can we not be invading? can you not be invading? can they not be invading?
Perfect	V-ing perfect
can I not have invaded? can you not have invaded? can she not have invaded? can we not have invaded? can you not have invaded? can they not have invaded?	can I not have been invading? can you not have been invading? can she not have been invading? can we not have been invading? can you not have been invading? can they not have been invading?