I could notify you could notify he could notify we could notify you could notify they could notify
V-ing form
I could be notifying you could be notifying he could be notifying we could be notifying you could be notifying they could be notifying
Perfect
I could have notified you could have notified he 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 he 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 he 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 he 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 he 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 he 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 he notify? could we notify? could you notify? could they notify?
V-ing form
could I be notifying? could you be notifying? could he be notifying? could we be notifying? could you be notifying? could they be notifying?
Perfect
could I have notified? could you have notified? could he 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 he 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 he 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 he 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 he 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 he have been notifying? couldn't we have been notifying? couldn't you have been notifying? couldn't they have been notifying?