English verb conjugation
OUGHT TO TREAD

Irregular verb: tread - trod - trod, trodden

Affirmation

Simple form	V-ing form
I ought to tread you ought to tread she ought to tread we ought to tread you ought to tread they ought to tread	I ought to be treading you ought to be treading she ought to be treading we ought to be treading you ought to be treading they ought to be treading
Perfect	V-ing perfect
I ought to have trod, trodden you ought to have trod, trodden she ought to have trod, trodden we ought to have trod, trodden you ought to have trod, trodden they ought to have trod, trodden	I ought to have been treading you ought to have been treading she ought to have been treading we ought to have been treading you ought to have been treading they ought to have been treading

Negation

Simple form	V-ing form
I oughtn't to tread you oughtn't to tread she oughtn't to tread we oughtn't to tread you oughtn't to tread they oughtn't to tread	I oughtn't to be treading you oughtn't to be treading she oughtn't to be treading we oughtn't to be treading you oughtn't to be treading they oughtn't to be treading
Perfect	V-ing perfect
I oughtn't to have trod, trodden you oughtn't to have trod, trodden she oughtn't to have trod, trodden we oughtn't to have trod, trodden you oughtn't to have trod, trodden they oughtn't to have trod, trodden	I oughtn't to have been treading you oughtn't to have been treading she oughtn't to have been treading we oughtn't to have been treading you oughtn't to have been treading they oughtn't to have been treading

Interrogative form

Simple form	V-ing form
ought to I tread? ought to you tread? ought to she tread? ought to we tread? ought to you tread? ought to they tread?	ought to I be treading? ought to you be treading? ought to she be treading? ought to we be treading? ought to you be treading? ought to they be treading?
Perfect	V-ing perfect
ought to I have trod, trodden? ought to you have trod, trodden? ought to she have trod, trodden? ought to we have trod, trodden? ought to you have trod, trodden? ought to they have trod, trodden?	ought to I have been treading? ought to you have been treading? ought to she have been treading? ought to we have been treading? ought to you have been treading? ought to they have been treading?

Interro-negative form

Simple form	V-ing form
oughtn't I to tread? oughtn't you to tread? oughtn't she to tread? oughtn't we to tread? oughtn't you to tread? oughtn't they to tread?	oughtn't I to be treading? oughtn't you to be treading? oughtn't she to be treading? oughtn't we to be treading? oughtn't you to be treading? oughtn't they to be treading?
Perfect	V-ing perfect
oughtn't I to have trod, trodden? oughtn't you to have trod, trodden? oughtn't she to have trod, trodden? oughtn't we to have trod, trodden? oughtn't you to have trod, trodden? oughtn't they to have trod, trodden?	oughtn't I to have been treading? oughtn't you to have been treading? oughtn't she to have been treading? oughtn't we to have been treading? oughtn't you to have been treading? oughtn't they to have been treading?