ought to chalk
Regular verb: chalk - chalked- chalked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to chalk
you ought to chalk
he ought to chalk
we ought to chalk
you ought to chalk
they ought to chalk 	I ought to be chalking
you ought to be chalking
he ought to be chalking
we ought to be chalking
you ought to be chalking
they ought to be chalking	I ought to have chalked
you ought to have chalked
he ought to have chalked
we ought to have chalked
you ought to have chalked
they ought to have chalked	I ought to have been chalking
you ought to have been chalking
he ought to have been chalking
we ought to have been chalking
you ought to have been chalking
they ought to have been chalking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to chalk
you oughtn't to chalk
he oughtn't to chalk
we oughtn't to chalk
you oughtn't to chalk
they oughtn't to chalk 	I oughtn't to be chalking
you oughtn't to be chalking
he oughtn't to be chalking
we oughtn't to be chalking
you oughtn't to be chalking
they oughtn't to be chalking	I oughtn't to have chalked
you oughtn't to have chalked
he oughtn't to have chalked
we oughtn't to have chalked
you oughtn't to have chalked
they oughtn't to have chalked	I oughtn't to have been chalking
you oughtn't to have been chalking
he oughtn't to have been chalking
we oughtn't to have been chalking
you oughtn't to have been chalking
they oughtn't to have been chalking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I chalk?
ought to you chalk?
ought to he chalk?
ought to we chalk?
ought to you chalk?
ought to they chalk? 	ought to I be chalking?
ought to you be chalking?
ought to he be chalking?
ought to we be chalking?
ought to you be chalking?
ought to they be chalking? 	ought to I have chalked?
ought to you have chalked?
ought to he have chalked?
ought to we have chalked?
ought to you have chalked?
ought to they have chalked? 	ought to I have been chalking?
ought to you have been chalking?
ought to he have been chalking?
ought to we have been chalking?
ought to you have been chalking?
ought to they have been chalking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to chalk?
oughtn't you to chalk?
oughtn't he to chalk?
oughtn't we to chalk?
oughtn't you to chalk?
oughtn't they to chalk? 	oughtn't I to be chalking?
oughtn't you to be chalking?
oughtn't he to be chalking?
oughtn't we to be chalking?
oughtn't you to be chalking?
oughtn't they to be chalking? 	oughtn't I to have chalked?
oughtn't you to have chalked?
oughtn't he to have chalked?
oughtn't we to have chalked?
oughtn't you to have chalked?
oughtn't they to have chalked? 	oughtn't I to have been chalking?
oughtn't you to have been chalking?
oughtn't he to have been chalking?
oughtn't we to have been chalking?
oughtn't you to have been chalking?
oughtn't they to have been chalking?