ought to liaise
Regular verb: liaise - liaised- liaised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to liaise
you ought to liaise
he ought to liaise
we ought to liaise
you ought to liaise
they ought to liaise 	I ought to be liaising
you ought to be liaising
he ought to be liaising
we ought to be liaising
you ought to be liaising
they ought to be liaising	I ought to have liaised
you ought to have liaised
he ought to have liaised
we ought to have liaised
you ought to have liaised
they ought to have liaised	I ought to have been liaising
you ought to have been liaising
he ought to have been liaising
we ought to have been liaising
you ought to have been liaising
they ought to have been liaising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to liaise
you oughtn't to liaise
he oughtn't to liaise
we oughtn't to liaise
you oughtn't to liaise
they oughtn't to liaise 	I oughtn't to be liaising
you oughtn't to be liaising
he oughtn't to be liaising
we oughtn't to be liaising
you oughtn't to be liaising
they oughtn't to be liaising	I oughtn't to have liaised
you oughtn't to have liaised
he oughtn't to have liaised
we oughtn't to have liaised
you oughtn't to have liaised
they oughtn't to have liaised	I oughtn't to have been liaising
you oughtn't to have been liaising
he oughtn't to have been liaising
we oughtn't to have been liaising
you oughtn't to have been liaising
they oughtn't to have been liaising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I liaise?
ought to you liaise?
ought to he liaise?
ought to we liaise?
ought to you liaise?
ought to they liaise? 	ought to I be liaising?
ought to you be liaising?
ought to he be liaising?
ought to we be liaising?
ought to you be liaising?
ought to they be liaising? 	ought to I have liaised?
ought to you have liaised?
ought to he have liaised?
ought to we have liaised?
ought to you have liaised?
ought to they have liaised? 	ought to I have been liaising?
ought to you have been liaising?
ought to he have been liaising?
ought to we have been liaising?
ought to you have been liaising?
ought to they have been liaising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to liaise?
oughtn't you to liaise?
oughtn't he to liaise?
oughtn't we to liaise?
oughtn't you to liaise?
oughtn't they to liaise? 	oughtn't I to be liaising?
oughtn't you to be liaising?
oughtn't he to be liaising?
oughtn't we to be liaising?
oughtn't you to be liaising?
oughtn't they to be liaising? 	oughtn't I to have liaised?
oughtn't you to have liaised?
oughtn't he to have liaised?
oughtn't we to have liaised?
oughtn't you to have liaised?
oughtn't they to have liaised? 	oughtn't I to have been liaising?
oughtn't you to have been liaising?
oughtn't he to have been liaising?
oughtn't we to have been liaising?
oughtn't you to have been liaising?
oughtn't they to have been liaising?