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