I may codify you may codify he may codify we may codify you may codify they may codify
V-ing form
I may be codifying you may be codifying he may be codifying we may be codifying you may be codifying they may be codifying
Perfect
I may have codified you may have codified he may have codified we may have codified you may have codified they may have codified
V-ing perfect
I may have been codifying you may have been codifying he may have been codifying we may have been codifying you may have been codifying they may have been codifying
Negation
Simple form
I mayn't codify you mayn't codify he mayn't codify we mayn't codify you mayn't codify they mayn't codify
V-ing form
I mayn't be codifying you mayn't be codifying he mayn't be codifying we mayn't be codifying you mayn't be codifying they mayn't be codifying
Perfect
I mayn't have codified you mayn't have codified he mayn't have codified we mayn't have codified you mayn't have codified they mayn't have codified
V-ing perfect
I mayn't have been codifying you mayn't have been codifying he mayn't have been codifying we mayn't have been codifying you mayn't have been codifying they mayn't have been codifying
Interrogative form
Simple form
may I codify? may you codify? may he codify? may we codify? may you codify? may they codify?
V-ing form
may I be codifying? may you be codifying? may he be codifying? may we be codifying? may you be codifying? may they be codifying?
Perfect
may I have codified? may you have codified? may he have codified? may we have codified? may you have codified? may they have codified?
V-ing perfect
may I have been codifying? may you have been codifying? may he have been codifying? may we have been codifying? may you have been codifying? may they have been codifying?
Interro-negative form
Simple form
mayn't I codify? mayn't you codify? mayn't he codify? mayn't we codify? mayn't you codify? mayn't they codify?
V-ing form
mayn't I be codifying? mayn't you be codifying? mayn't he be codifying? mayn't we be codifying? mayn't you be codifying? mayn't they be codifying?
Perfect
mayn't I have codified? mayn't you have codified? mayn't he have codified? mayn't we have codified? mayn't you have codified? mayn't they have codified?
V-ing perfect
mayn't I have been codifying? mayn't you have been codifying? mayn't he have been codifying? mayn't we have been codifying? mayn't you have been codifying? mayn't they have been codifying?