ought to lithify
Regular verb: lithify - lithified- lithified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to lithify
you ought to lithify
he ought to lithify
we ought to lithify
you ought to lithify
they ought to lithify 	I ought to be lithifying
you ought to be lithifying
he ought to be lithifying
we ought to be lithifying
you ought to be lithifying
they ought to be lithifying	I ought to have lithified
you ought to have lithified
he ought to have lithified
we ought to have lithified
you ought to have lithified
they ought to have lithified	I ought to have been lithifying
you ought to have been lithifying
he ought to have been lithifying
we ought to have been lithifying
you ought to have been lithifying
they ought to have been lithifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to lithify
you oughtn't to lithify
he oughtn't to lithify
we oughtn't to lithify
you oughtn't to lithify
they oughtn't to lithify 	I oughtn't to be lithifying
you oughtn't to be lithifying
he oughtn't to be lithifying
we oughtn't to be lithifying
you oughtn't to be lithifying
they oughtn't to be lithifying	I oughtn't to have lithified
you oughtn't to have lithified
he oughtn't to have lithified
we oughtn't to have lithified
you oughtn't to have lithified
they oughtn't to have lithified	I oughtn't to have been lithifying
you oughtn't to have been lithifying
he oughtn't to have been lithifying
we oughtn't to have been lithifying
you oughtn't to have been lithifying
they oughtn't to have been lithifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I lithify?
ought to you lithify?
ought to he lithify?
ought to we lithify?
ought to you lithify?
ought to they lithify? 	ought to I be lithifying?
ought to you be lithifying?
ought to he be lithifying?
ought to we be lithifying?
ought to you be lithifying?
ought to they be lithifying? 	ought to I have lithified?
ought to you have lithified?
ought to he have lithified?
ought to we have lithified?
ought to you have lithified?
ought to they have lithified? 	ought to I have been lithifying?
ought to you have been lithifying?
ought to he have been lithifying?
ought to we have been lithifying?
ought to you have been lithifying?
ought to they have been lithifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to lithify?
oughtn't you to lithify?
oughtn't he to lithify?
oughtn't we to lithify?
oughtn't you to lithify?
oughtn't they to lithify? 	oughtn't I to be lithifying?
oughtn't you to be lithifying?
oughtn't he to be lithifying?
oughtn't we to be lithifying?
oughtn't you to be lithifying?
oughtn't they to be lithifying? 	oughtn't I to have lithified?
oughtn't you to have lithified?
oughtn't he to have lithified?
oughtn't we to have lithified?
oughtn't you to have lithified?
oughtn't they to have lithified? 	oughtn't I to have been lithifying?
oughtn't you to have been lithifying?
oughtn't he to have been lithifying?
oughtn't we to have been lithifying?
oughtn't you to have been lithifying?
oughtn't they to have been lithifying?