I can invoice you can invoice he can invoice we can invoice you can invoice they can invoice
V-ing form
I can be invoicing you can be invoicing he can be invoicing we can be invoicing you can be invoicing they can be invoicing
Perfect
I can have invoiced you can have invoiced he can have invoiced we can have invoiced you can have invoiced they can have invoiced
V-ing perfect
I can have been invoicing you can have been invoicing he can have been invoicing we can have been invoicing you can have been invoicing they can have been invoicing
Negation
Simple form
I can't invoice you can't invoice he can't invoice we can't invoice you can't invoice they can't invoice
V-ing form
I can't be invoicing you can't be invoicing he can't be invoicing we can't be invoicing you can't be invoicing they can't be invoicing
Perfect
I can't have invoiced you can't have invoiced he can't have invoiced we can't have invoiced you can't have invoiced they can't have invoiced
V-ing perfect
I can't have been invoicing you can't have been invoicing he can't have been invoicing we can't have been invoicing you can't have been invoicing they can't have been invoicing
Interrogative form
Simple form
can I invoice? can you invoice? can he invoice? can we invoice? can you invoice? can they invoice?
V-ing form
can I be invoicing? can you be invoicing? can he be invoicing? can we be invoicing? can you be invoicing? can they be invoicing?
Perfect
can I have invoiced? can you have invoiced? can he have invoiced? can we have invoiced? can you have invoiced? can they have invoiced?
V-ing perfect
can I have been invoicing? can you have been invoicing? can he have been invoicing? can we have been invoicing? can you have been invoicing? can they have been invoicing?
Interro-negative form
Simple form
can't I invoice? can't you invoice? can't he invoice? can't we invoice? can't you invoice? can't they invoice?
V-ing form
can't I be invoicing? can't you be invoicing? can't he be invoicing? can't we be invoicing? can't you be invoicing? can't they be invoicing?
Perfect
can't I have invoiced? can't you have invoiced? can't he have invoiced? can't we have invoiced? can't you have invoiced? can't they have invoiced?
V-ing perfect
can't I have been invoicing? can't you have been invoicing? can't he have been invoicing? can't we have been invoicing? can't you have been invoicing? can't they have been invoicing?