English verb conjugation
COULD APPERCEIVE

Regular verb: apperceive - apperceived - apperceived

Affirmation

Simple form	V-ing form
I could apperceive you could apperceive she could apperceive we could apperceive you could apperceive they could apperceive	I could be apperceiving you could be apperceiving she could be apperceiving we could be apperceiving you could be apperceiving they could be apperceiving
Perfect	V-ing perfect
I could have apperceived you could have apperceived she could have apperceived we could have apperceived you could have apperceived they could have apperceived	I could have been apperceiving you could have been apperceiving she could have been apperceiving we could have been apperceiving you could have been apperceiving they could have been apperceiving

Negation

Simple form	V-ing form
I could not apperceive you could not apperceive she could not apperceive we could not apperceive you could not apperceive they could not apperceive	I could not be apperceiving you could not be apperceiving she could not be apperceiving we could not be apperceiving you could not be apperceiving they could not be apperceiving
Perfect	V-ing perfect
I could not have apperceived you could not have apperceived she could not have apperceived we could not have apperceived you could not have apperceived they could not have apperceived	I could not have been apperceiving you could not have been apperceiving she could not have been apperceiving we could not have been apperceiving you could not have been apperceiving they could not have been apperceiving

Interrogative form

Simple form	V-ing form
could I apperceive? could you apperceive? could she apperceive? could we apperceive? could you apperceive? could they apperceive?	could I be apperceiving? could you be apperceiving? could she be apperceiving? could we be apperceiving? could you be apperceiving? could they be apperceiving?
Perfect	V-ing perfect
could I have apperceived? could you have apperceived? could she have apperceived? could we have apperceived? could you have apperceived? could they have apperceived?	could I have been apperceiving? could you have been apperceiving? could she have been apperceiving? could we have been apperceiving? could you have been apperceiving? could they have been apperceiving?

Interro-negative form

Simple form	V-ing form
could I not apperceive? could you not apperceive? could she not apperceive? could we not apperceive? could you not apperceive? could they not apperceive?	could I not be apperceiving? could you not be apperceiving? could she not be apperceiving? could we not be apperceiving? could you not be apperceiving? could they not be apperceiving?
Perfect	V-ing perfect
could I not have apperceived? could you not have apperceived? could she not have apperceived? could we not have apperceived? could you not have apperceived? could they not have apperceived?	could I not have been apperceiving? could you not have been apperceiving? could she not have been apperceiving? could we not have been apperceiving? could you not have been apperceiving? could they not have been apperceiving?