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