I could issue you could issue she could issue we could issue you could issue they could issue
V-ing form
I could be issuing you could be issuing she could be issuing we could be issuing you could be issuing they could be issuing
Perfect
I could have issued you could have issued she could have issued we could have issued you could have issued they could have issued
V-ing perfect
I could have been issuing you could have been issuing she could have been issuing we could have been issuing you could have been issuing they could have been issuing
Negation
Simple form
I couldn't issue you couldn't issue she couldn't issue we couldn't issue you couldn't issue they couldn't issue
V-ing form
I couldn't be issuing you couldn't be issuing she couldn't be issuing we couldn't be issuing you couldn't be issuing they couldn't be issuing
Perfect
I couldn't have issued you couldn't have issued she couldn't have issued we couldn't have issued you couldn't have issued they couldn't have issued
V-ing perfect
I couldn't have been issuing you couldn't have been issuing she couldn't have been issuing we couldn't have been issuing you couldn't have been issuing they couldn't have been issuing
Interrogative form
Simple form
could I issue? could you issue? could she issue? could we issue? could you issue? could they issue?
V-ing form
could I be issuing? could you be issuing? could she be issuing? could we be issuing? could you be issuing? could they be issuing?
Perfect
could I have issued? could you have issued? could she have issued? could we have issued? could you have issued? could they have issued?
V-ing perfect
could I have been issuing? could you have been issuing? could she have been issuing? could we have been issuing? could you have been issuing? could they have been issuing?
Interro-negative form
Simple form
couldn't I issue? couldn't you issue? couldn't she issue? couldn't we issue? couldn't you issue? couldn't they issue?
V-ing form
couldn't I be issuing? couldn't you be issuing? couldn't she be issuing? couldn't we be issuing? couldn't you be issuing? couldn't they be issuing?
Perfect
couldn't I have issued? couldn't you have issued? couldn't she have issued? couldn't we have issued? couldn't you have issued? couldn't they have issued?
V-ing perfect
couldn't I have been issuing? couldn't you have been issuing? couldn't she have been issuing? couldn't we have been issuing? couldn't you have been issuing? couldn't they have been issuing?