I could resystematize you could resystematize she could resystematize we could resystematize you could resystematize they could resystematize
V-ing form
I could be resystematizing you could be resystematizing she could be resystematizing we could be resystematizing you could be resystematizing they could be resystematizing
Perfect
I could have resystematized you could have resystematized she 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 she 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 she 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 she 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 she 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 she 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 she resystematize? could we resystematize? could you resystematize? could they resystematize?
V-ing form
could I be resystematizing? could you be resystematizing? could she be resystematizing? could we be resystematizing? could you be resystematizing? could they be resystematizing?
Perfect
could I have resystematized? could you have resystematized? could she 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 she 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 she 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 she 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 she 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 she have been resystematizing? couldn't we have been resystematizing? couldn't you have been resystematizing? couldn't they have been resystematizing?