I can invite you can invite he can invite we can invite you can invite they can invite
V-ing form
I can be inviting you can be inviting he can be inviting we can be inviting you can be inviting they can be inviting
Perfect
I can have invited you can have invited he can have invited we can have invited you can have invited they can have invited
V-ing perfect
I can have been inviting you can have been inviting he can have been inviting we can have been inviting you can have been inviting they can have been inviting
Negation
Simple form
I can't invite you can't invite he can't invite we can't invite you can't invite they can't invite
V-ing form
I can't be inviting you can't be inviting he can't be inviting we can't be inviting you can't be inviting they can't be inviting
Perfect
I can't have invited you can't have invited he can't have invited we can't have invited you can't have invited they can't have invited
V-ing perfect
I can't have been inviting you can't have been inviting he can't have been inviting we can't have been inviting you can't have been inviting they can't have been inviting
Interrogative form
Simple form
can I invite? can you invite? can he invite? can we invite? can you invite? can they invite?
V-ing form
can I be inviting? can you be inviting? can he be inviting? can we be inviting? can you be inviting? can they be inviting?
Perfect
can I have invited? can you have invited? can he have invited? can we have invited? can you have invited? can they have invited?
V-ing perfect
can I have been inviting? can you have been inviting? can he have been inviting? can we have been inviting? can you have been inviting? can they have been inviting?
Interro-negative form
Simple form
can't I invite? can't you invite? can't he invite? can't we invite? can't you invite? can't they invite?
V-ing form
can't I be inviting? can't you be inviting? can't he be inviting? can't we be inviting? can't you be inviting? can't they be inviting?
Perfect
can't I have invited? can't you have invited? can't he have invited? can't we have invited? can't you have invited? can't they have invited?
V-ing perfect
can't I have been inviting? can't you have been inviting? can't he have been inviting? can't we have been inviting? can't you have been inviting? can't they have been inviting?