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