I ought to silt you ought to silt he ought to silt we ought to silt you ought to silt they ought to silt
V-ing form
I ought to be silting you ought to be silting he ought to be silting we ought to be silting you ought to be silting they ought to be silting
Perfect
I ought to have silted you ought to have silted he ought to have silted we ought to have silted you ought to have silted they ought to have silted
V-ing perfect
I ought to have been silting you ought to have been silting he ought to have been silting we ought to have been silting you ought to have been silting they ought to have been silting
Negation
Simple form
I oughtn't to silt you oughtn't to silt he oughtn't to silt we oughtn't to silt you oughtn't to silt they oughtn't to silt
V-ing form
I oughtn't to be silting you oughtn't to be silting he oughtn't to be silting we oughtn't to be silting you oughtn't to be silting they oughtn't to be silting
Perfect
I oughtn't to have silted you oughtn't to have silted he oughtn't to have silted we oughtn't to have silted you oughtn't to have silted they oughtn't to have silted
V-ing perfect
I oughtn't to have been silting you oughtn't to have been silting he oughtn't to have been silting we oughtn't to have been silting you oughtn't to have been silting they oughtn't to have been silting
Interrogative form
Simple form
ought to I silt? ought to you silt? ought to he silt? ought to we silt? ought to you silt? ought to they silt?
V-ing form
ought to I be silting? ought to you be silting? ought to he be silting? ought to we be silting? ought to you be silting? ought to they be silting?
Perfect
ought to I have silted? ought to you have silted? ought to he have silted? ought to we have silted? ought to you have silted? ought to they have silted?
V-ing perfect
ought to I have been silting? ought to you have been silting? ought to he have been silting? ought to we have been silting? ought to you have been silting? ought to they have been silting?
Interro-negative form
Simple form
oughtn't I to silt? oughtn't you to silt? oughtn't he to silt? oughtn't we to silt? oughtn't you to silt? oughtn't they to silt?
V-ing form
oughtn't I to be silting? oughtn't you to be silting? oughtn't he to be silting? oughtn't we to be silting? oughtn't you to be silting? oughtn't they to be silting?
Perfect
oughtn't I to have silted? oughtn't you to have silted? oughtn't he to have silted? oughtn't we to have silted? oughtn't you to have silted? oughtn't they to have silted?
V-ing perfect
oughtn't I to have been silting? oughtn't you to have been silting? oughtn't he to have been silting? oughtn't we to have been silting? oughtn't you to have been silting? oughtn't they to have been silting?