ought to conceal
Regular verb: conceal - concealed- concealed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to conceal
you ought to conceal
she ought to conceal
we ought to conceal
you ought to conceal
they ought to conceal 	I ought to be concealing
you ought to be concealing
she ought to be concealing
we ought to be concealing
you ought to be concealing
they ought to be concealing	I ought to have concealed
you ought to have concealed
she ought to have concealed
we ought to have concealed
you ought to have concealed
they ought to have concealed	I ought to have been concealing
you ought to have been concealing
she ought to have been concealing
we ought to have been concealing
you ought to have been concealing
they ought to have been concealing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to conceal
you ought not to conceal
she ought not to conceal
we ought not to conceal
you ought not to conceal
they ought not to conceal 	I ought not to concealing
you ought not to concealing
she ought not to concealing
we ought not to concealing
you ought not to concealing
they ought not to concealing	I ought not to have concealed
you ought not to have concealed
she ought not to have concealed
we ought not to have concealed
you ought not to have concealed
they ought not to have concealed	I ought not to have been concealing
you ought not to have been concealing
she ought not to have been concealing
we ought not to have been concealing
you ought not to have been concealing
they ought not to have been concealing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I conceal?
ought to you conceal?
ought to she conceal?
ought to we conceal?
ought to you conceal?
ought to they conceal? 	ought to I be concealing?
ought to you be concealing?
ought to she be concealing?
ought to we be concealing?
ought to you be concealing?
ought to they be concealing? 	ought to I have concealed?
ought to you have concealed?
ought to she have concealed?
ought to we have concealed?
ought to you have concealed?
ought to they have concealed? 	ought to I have been concealing?
ought to you have been concealing?
ought to she have been concealing?
ought to we have been concealing?
ought to you have been concealing?
ought to they have been concealing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to conceal?
ought you not to conceal?
ought she not to conceal?
ought we not to conceal?
ought you not to conceal?
ought they not to conceal? 	ought I not to be concealing?
ought you not to be concealing?
ought she not to be concealing?
ought we not to be concealing?
ought you not to be concealing?
ought they not to be concealing? 	ought I not to have concealed?
ought you not to have concealed?
ought she not to have concealed?
ought we not to have concealed?
ought you not to have concealed?
ought they not to have concealed? 	ought I not to have been concealing?
ought you not to have been concealing?
ought she not to have been concealing?
ought we not to have been concealing?
ought you not to have been concealing?
ought they not to have been concealing?