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