I ought to apperceive you ought to apperceive she ought to apperceive we ought to apperceive you ought to apperceive they ought to apperceive
V-ing form
I ought to be apperceiving you ought to be apperceiving she ought to be apperceiving we ought to be apperceiving you ought to be apperceiving they ought to be apperceiving
Perfect
I ought to have apperceived you ought to have apperceived she ought to have apperceived we ought to have apperceived you ought to have apperceived they ought to have apperceived
V-ing perfect
I ought to have been apperceiving you ought to have been apperceiving she ought to have been apperceiving we ought to have been apperceiving you ought to have been apperceiving they ought to have been apperceiving
Negation
Simple form
I oughtn't to apperceive you oughtn't to apperceive she oughtn't to apperceive we oughtn't to apperceive you oughtn't to apperceive they oughtn't to apperceive
V-ing form
I oughtn't to be apperceiving you oughtn't to be apperceiving she oughtn't to be apperceiving we oughtn't to be apperceiving you oughtn't to be apperceiving they oughtn't to be apperceiving
Perfect
I oughtn't to have apperceived you oughtn't to have apperceived she oughtn't to have apperceived we oughtn't to have apperceived you oughtn't to have apperceived they oughtn't to have apperceived
V-ing perfect
I oughtn't to have been apperceiving you oughtn't to have been apperceiving she oughtn't to have been apperceiving we oughtn't to have been apperceiving you oughtn't to have been apperceiving they oughtn't to have been apperceiving
Interrogative form
Simple form
ought to I apperceive? ought to you apperceive? ought to she apperceive? ought to we apperceive? ought to you apperceive? ought to they apperceive?
V-ing form
ought to I be apperceiving? ought to you be apperceiving? ought to she be apperceiving? ought to we be apperceiving? ought to you be apperceiving? ought to they be apperceiving?
Perfect
ought to I have apperceived? ought to you have apperceived? ought to she have apperceived? ought to we have apperceived? ought to you have apperceived? ought to they have apperceived?
V-ing perfect
ought to I have been apperceiving? ought to you have been apperceiving? ought to she have been apperceiving? ought to we have been apperceiving? ought to you have been apperceiving? ought to they have been apperceiving?
Interro-negative form
Simple form
oughtn't I to apperceive? oughtn't you to apperceive? oughtn't she to apperceive? oughtn't we to apperceive? oughtn't you to apperceive? oughtn't they to apperceive?
V-ing form
oughtn't I to be apperceiving? oughtn't you to be apperceiving? oughtn't she to be apperceiving? oughtn't we to be apperceiving? oughtn't you to be apperceiving? oughtn't they to be apperceiving?
Perfect
oughtn't I to have apperceived? oughtn't you to have apperceived? oughtn't she to have apperceived? oughtn't we to have apperceived? oughtn't you to have apperceived? oughtn't they to have apperceived?
V-ing perfect
oughtn't I to have been apperceiving? oughtn't you to have been apperceiving? oughtn't she to have been apperceiving? oughtn't we to have been apperceiving? oughtn't you to have been apperceiving? oughtn't they to have been apperceiving?