I could issue you could issue he could issue we could issue you could issue they could issue
V-ing form
I could be issuing you could be issuing he could be issuing we could be issuing you could be issuing they could be issuing
Perfect
I could have issued you could have issued he 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 he 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 he 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 he 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 he 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 he 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 he issue? could we issue? could you issue? could they issue?
V-ing form
could I be issuing? could you be issuing? could he be issuing? could we be issuing? could you be issuing? could they be issuing?
Perfect
could I have issued? could you have issued? could he 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 he 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 he 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 he 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 he 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 he have been issuing? couldn't we have been issuing? couldn't you have been issuing? couldn't they have been issuing?