I could report you could report he could report we could report you could report they could report
V-ing form
I could be reporting you could be reporting he could be reporting we could be reporting you could be reporting they could be reporting
Perfect
I could have reported you could have reported he could have reported we could have reported you could have reported they could have reported
V-ing perfect
I could have been reporting you could have been reporting he could have been reporting we could have been reporting you could have been reporting they could have been reporting
Negation
Simple form
I couldn't report you couldn't report he couldn't report we couldn't report you couldn't report they couldn't report
V-ing form
I couldn't be reporting you couldn't be reporting he couldn't be reporting we couldn't be reporting you couldn't be reporting they couldn't be reporting
Perfect
I couldn't have reported you couldn't have reported he couldn't have reported we couldn't have reported you couldn't have reported they couldn't have reported
V-ing perfect
I couldn't have been reporting you couldn't have been reporting he couldn't have been reporting we couldn't have been reporting you couldn't have been reporting they couldn't have been reporting
Interrogative form
Simple form
could I report? could you report? could he report? could we report? could you report? could they report?
V-ing form
could I be reporting? could you be reporting? could he be reporting? could we be reporting? could you be reporting? could they be reporting?
Perfect
could I have reported? could you have reported? could he have reported? could we have reported? could you have reported? could they have reported?
V-ing perfect
could I have been reporting? could you have been reporting? could he have been reporting? could we have been reporting? could you have been reporting? could they have been reporting?
Interro-negative form
Simple form
couldn't I report? couldn't you report? couldn't he report? couldn't we report? couldn't you report? couldn't they report?
V-ing form
couldn't I be reporting? couldn't you be reporting? couldn't he be reporting? couldn't we be reporting? couldn't you be reporting? couldn't they be reporting?
Perfect
couldn't I have reported? couldn't you have reported? couldn't he have reported? couldn't we have reported? couldn't you have reported? couldn't they have reported?
V-ing perfect
couldn't I have been reporting? couldn't you have been reporting? couldn't he have been reporting? couldn't we have been reporting? couldn't you have been reporting? couldn't they have been reporting?