ought to apprehend
Regular verb: apprehend - apprehended- apprehended

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to apprehend
you ought to apprehend
she ought to apprehend
we ought to apprehend
you ought to apprehend
they ought to apprehend 	I ought to be apprehending
you ought to be apprehending
she ought to be apprehending
we ought to be apprehending
you ought to be apprehending
they ought to be apprehending	I ought to have apprehended
you ought to have apprehended
she ought to have apprehended
we ought to have apprehended
you ought to have apprehended
they ought to have apprehended	I ought to have been apprehending
you ought to have been apprehending
she ought to have been apprehending
we ought to have been apprehending
you ought to have been apprehending
they ought to have been apprehending	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to apprehend
you ought not to apprehend
she ought not to apprehend
we ought not to apprehend
you ought not to apprehend
they ought not to apprehend 	I ought not to apprehending
you ought not to apprehending
she ought not to apprehending
we ought not to apprehending
you ought not to apprehending
they ought not to apprehending	I ought not to have apprehended
you ought not to have apprehended
she ought not to have apprehended
we ought not to have apprehended
you ought not to have apprehended
they ought not to have apprehended	I ought not to have been apprehending
you ought not to have been apprehending
she ought not to have been apprehending
we ought not to have been apprehending
you ought not to have been apprehending
they ought not to have been apprehending	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I apprehend?
ought to you apprehend?
ought to she apprehend?
ought to we apprehend?
ought to you apprehend?
ought to they apprehend? 	ought to I be apprehending?
ought to you be apprehending?
ought to she be apprehending?
ought to we be apprehending?
ought to you be apprehending?
ought to they be apprehending? 	ought to I have apprehended?
ought to you have apprehended?
ought to she have apprehended?
ought to we have apprehended?
ought to you have apprehended?
ought to they have apprehended? 	ought to I have been apprehending?
ought to you have been apprehending?
ought to she have been apprehending?
ought to we have been apprehending?
ought to you have been apprehending?
ought to they have been apprehending? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to apprehend?
ought you not to apprehend?
ought she not to apprehend?
ought we not to apprehend?
ought you not to apprehend?
ought they not to apprehend? 	ought I not to be apprehending?
ought you not to be apprehending?
ought she not to be apprehending?
ought we not to be apprehending?
ought you not to be apprehending?
ought they not to be apprehending? 	ought I not to have apprehended?
ought you not to have apprehended?
ought she not to have apprehended?
ought we not to have apprehended?
ought you not to have apprehended?
ought they not to have apprehended? 	ought I not to have been apprehending?
ought you not to have been apprehending?
ought she not to have been apprehending?
ought we not to have been apprehending?
ought you not to have been apprehending?
ought they not to have been apprehending?