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