I could arm you could arm she could arm we could arm you could arm they could arm
V-ing form
I could be arming you could be arming she could be arming we could be arming you could be arming they could be arming
Perfect
I could have armed you could have armed she could have armed we could have armed you could have armed they could have armed
V-ing perfect
I could have been arming you could have been arming she could have been arming we could have been arming you could have been arming they could have been arming
Negation
Simple form
I could not arm you could not arm she could not arm we could not arm you could not arm they could not arm
V-ing form
I could not be arming you could not be arming she could not be arming we could not be arming you could not be arming they could not be arming
Perfect
I could not have armed you could not have armed she could not have armed we could not have armed you could not have armed they could not have armed
V-ing perfect
I could not have been arming you could not have been arming she could not have been arming we could not have been arming you could not have been arming they could not have been arming
Interrogative form
Simple form
could I arm? could you arm? could she arm? could we arm? could you arm? could they arm?
V-ing form
could I be arming? could you be arming? could she be arming? could we be arming? could you be arming? could they be arming?
Perfect
could I have armed? could you have armed? could she have armed? could we have armed? could you have armed? could they have armed?
V-ing perfect
could I have been arming? could you have been arming? could she have been arming? could we have been arming? could you have been arming? could they have been arming?
Interro-negative form
Simple form
could I not arm? could you not arm? could she not arm? could we not arm? could you not arm? could they not arm?
V-ing form
could I not be arming? could you not be arming? could she not be arming? could we not be arming? could you not be arming? could they not be arming?
Perfect
could I not have armed? could you not have armed? could she not have armed? could we not have armed? could you not have armed? could they not have armed?
V-ing perfect
could I not have been arming? could you not have been arming? could she not have been arming? could we not have been arming? could you not have been arming? could they not have been arming?