ought to clerk
Regular verb: clerk - clerked- clerked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to clerk
you ought to clerk
he ought to clerk
we ought to clerk
you ought to clerk
they ought to clerk 	I ought to be clerking
you ought to be clerking
he ought to be clerking
we ought to be clerking
you ought to be clerking
they ought to be clerking	I ought to have clerked
you ought to have clerked
he ought to have clerked
we ought to have clerked
you ought to have clerked
they ought to have clerked	I ought to have been clerking
you ought to have been clerking
he ought to have been clerking
we ought to have been clerking
you ought to have been clerking
they ought to have been clerking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to clerk
you oughtn't to clerk
he oughtn't to clerk
we oughtn't to clerk
you oughtn't to clerk
they oughtn't to clerk 	I oughtn't to be clerking
you oughtn't to be clerking
he oughtn't to be clerking
we oughtn't to be clerking
you oughtn't to be clerking
they oughtn't to be clerking	I oughtn't to have clerked
you oughtn't to have clerked
he oughtn't to have clerked
we oughtn't to have clerked
you oughtn't to have clerked
they oughtn't to have clerked	I oughtn't to have been clerking
you oughtn't to have been clerking
he oughtn't to have been clerking
we oughtn't to have been clerking
you oughtn't to have been clerking
they oughtn't to have been clerking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I clerk?
ought to you clerk?
ought to he clerk?
ought to we clerk?
ought to you clerk?
ought to they clerk? 	ought to I be clerking?
ought to you be clerking?
ought to he be clerking?
ought to we be clerking?
ought to you be clerking?
ought to they be clerking? 	ought to I have clerked?
ought to you have clerked?
ought to he have clerked?
ought to we have clerked?
ought to you have clerked?
ought to they have clerked? 	ought to I have been clerking?
ought to you have been clerking?
ought to he have been clerking?
ought to we have been clerking?
ought to you have been clerking?
ought to they have been clerking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to clerk?
oughtn't you to clerk?
oughtn't he to clerk?
oughtn't we to clerk?
oughtn't you to clerk?
oughtn't they to clerk? 	oughtn't I to be clerking?
oughtn't you to be clerking?
oughtn't he to be clerking?
oughtn't we to be clerking?
oughtn't you to be clerking?
oughtn't they to be clerking? 	oughtn't I to have clerked?
oughtn't you to have clerked?
oughtn't he to have clerked?
oughtn't we to have clerked?
oughtn't you to have clerked?
oughtn't they to have clerked? 	oughtn't I to have been clerking?
oughtn't you to have been clerking?
oughtn't he to have been clerking?
oughtn't we to have been clerking?
oughtn't you to have been clerking?
oughtn't they to have been clerking?