ought to slip
Regular verb: slip - slipped- slipped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to slip
you ought to slip
he ought to slip
we ought to slip
you ought to slip
they ought to slip 	I ought to be slipping
you ought to be slipping
he ought to be slipping
we ought to be slipping
you ought to be slipping
they ought to be slipping	I ought to have slipped
you ought to have slipped
he ought to have slipped
we ought to have slipped
you ought to have slipped
they ought to have slipped	I ought to have been slipping
you ought to have been slipping
he ought to have been slipping
we ought to have been slipping
you ought to have been slipping
they ought to have been slipping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to slip
you oughtn't to slip
he oughtn't to slip
we oughtn't to slip
you oughtn't to slip
they oughtn't to slip 	I oughtn't to be slipping
you oughtn't to be slipping
he oughtn't to be slipping
we oughtn't to be slipping
you oughtn't to be slipping
they oughtn't to be slipping	I oughtn't to have slipped
you oughtn't to have slipped
he oughtn't to have slipped
we oughtn't to have slipped
you oughtn't to have slipped
they oughtn't to have slipped	I oughtn't to have been slipping
you oughtn't to have been slipping
he oughtn't to have been slipping
we oughtn't to have been slipping
you oughtn't to have been slipping
they oughtn't to have been slipping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I slip?
ought to you slip?
ought to he slip?
ought to we slip?
ought to you slip?
ought to they slip? 	ought to I be slipping?
ought to you be slipping?
ought to he be slipping?
ought to we be slipping?
ought to you be slipping?
ought to they be slipping? 	ought to I have slipped?
ought to you have slipped?
ought to he have slipped?
ought to we have slipped?
ought to you have slipped?
ought to they have slipped? 	ought to I have been slipping?
ought to you have been slipping?
ought to he have been slipping?
ought to we have been slipping?
ought to you have been slipping?
ought to they have been slipping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to slip?
oughtn't you to slip?
oughtn't he to slip?
oughtn't we to slip?
oughtn't you to slip?
oughtn't they to slip? 	oughtn't I to be slipping?
oughtn't you to be slipping?
oughtn't he to be slipping?
oughtn't we to be slipping?
oughtn't you to be slipping?
oughtn't they to be slipping? 	oughtn't I to have slipped?
oughtn't you to have slipped?
oughtn't he to have slipped?
oughtn't we to have slipped?
oughtn't you to have slipped?
oughtn't they to have slipped? 	oughtn't I to have been slipping?
oughtn't you to have been slipping?
oughtn't he to have been slipping?
oughtn't we to have been slipping?
oughtn't you to have been slipping?
oughtn't they to have been slipping?