I ought to devise you ought to devise she ought to devise we ought to devise you ought to devise they ought to devise
V-ing form
I ought to be devising you ought to be devising she ought to be devising we ought to be devising you ought to be devising they ought to be devising
Perfect
I ought to have devised you ought to have devised she ought to have devised we ought to have devised you ought to have devised they ought to have devised
V-ing perfect
I ought to have been devising you ought to have been devising she ought to have been devising we ought to have been devising you ought to have been devising they ought to have been devising
Negation
Simple form
I oughtn't to devise you oughtn't to devise she oughtn't to devise we oughtn't to devise you oughtn't to devise they oughtn't to devise
V-ing form
I oughtn't to be devising you oughtn't to be devising she oughtn't to be devising we oughtn't to be devising you oughtn't to be devising they oughtn't to be devising
Perfect
I oughtn't to have devised you oughtn't to have devised she oughtn't to have devised we oughtn't to have devised you oughtn't to have devised they oughtn't to have devised
V-ing perfect
I oughtn't to have been devising you oughtn't to have been devising she oughtn't to have been devising we oughtn't to have been devising you oughtn't to have been devising they oughtn't to have been devising
Interrogative form
Simple form
ought to I devise? ought to you devise? ought to she devise? ought to we devise? ought to you devise? ought to they devise?
V-ing form
ought to I be devising? ought to you be devising? ought to she be devising? ought to we be devising? ought to you be devising? ought to they be devising?
Perfect
ought to I have devised? ought to you have devised? ought to she have devised? ought to we have devised? ought to you have devised? ought to they have devised?
V-ing perfect
ought to I have been devising? ought to you have been devising? ought to she have been devising? ought to we have been devising? ought to you have been devising? ought to they have been devising?
Interro-negative form
Simple form
oughtn't I to devise? oughtn't you to devise? oughtn't she to devise? oughtn't we to devise? oughtn't you to devise? oughtn't they to devise?
V-ing form
oughtn't I to be devising? oughtn't you to be devising? oughtn't she to be devising? oughtn't we to be devising? oughtn't you to be devising? oughtn't they to be devising?
Perfect
oughtn't I to have devised? oughtn't you to have devised? oughtn't she to have devised? oughtn't we to have devised? oughtn't you to have devised? oughtn't they to have devised?
V-ing perfect
oughtn't I to have been devising? oughtn't you to have been devising? oughtn't she to have been devising? oughtn't we to have been devising? oughtn't you to have been devising? oughtn't they to have been devising?