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