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