I could permit you could permit he could permit we could permit you could permit they could permit
V-ing form
I could be permitting you could be permitting he could be permitting we could be permitting you could be permitting they could be permitting
Perfect
I could have permitted you could have permitted he could have permitted we could have permitted you could have permitted they could have permitted
V-ing perfect
I could have been permitting you could have been permitting he could have been permitting we could have been permitting you could have been permitting they could have been permitting
Negation
Simple form
I could not permit you could not permit he could not permit we could not permit you could not permit they could not permit
V-ing form
I could not be permitting you could not be permitting he could not be permitting we could not be permitting you could not be permitting they could not be permitting
Perfect
I could not have permitted you could not have permitted he could not have permitted we could not have permitted you could not have permitted they could not have permitted
V-ing perfect
I could not have been permitting you could not have been permitting he could not have been permitting we could not have been permitting you could not have been permitting they could not have been permitting
Interrogative form
Simple form
could I permit? could you permit? could he permit? could we permit? could you permit? could they permit?
V-ing form
could I be permitting? could you be permitting? could he be permitting? could we be permitting? could you be permitting? could they be permitting?
Perfect
could I have permitted? could you have permitted? could he have permitted? could we have permitted? could you have permitted? could they have permitted?
V-ing perfect
could I have been permitting? could you have been permitting? could he have been permitting? could we have been permitting? could you have been permitting? could they have been permitting?
Interro-negative form
Simple form
could I not permit? could you not permit? could he not permit? could we not permit? could you not permit? could they not permit?
V-ing form
could I not be permitting? could you not be permitting? could he not be permitting? could we not be permitting? could you not be permitting? could they not be permitting?
Perfect
could I not have permitted? could you not have permitted? could he not have permitted? could we not have permitted? could you not have permitted? could they not have permitted?
V-ing perfect
could I not have been permitting? could you not have been permitting? could he not have been permitting? could we not have been permitting? could you not have been permitting? could they not have been permitting?