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