English verb conjugation
MAY SHAM

Regular verb: sham - shammed - shammed

Affirmation

Simple form	V-ing form
I may sham you may sham he may sham we may sham you may sham they may sham	I may be shamming you may be shamming he may be shamming we may be shamming you may be shamming they may be shamming
Perfect	V-ing perfect
I may have shammed you may have shammed he may have shammed we may have shammed you may have shammed they may have shammed	I may have been shamming you may have been shamming he may have been shamming we may have been shamming you may have been shamming they may have been shamming

Negation

Simple form	V-ing form
I mayn't sham you mayn't sham he mayn't sham we mayn't sham you mayn't sham they mayn't sham	I mayn't be shamming you mayn't be shamming he mayn't be shamming we mayn't be shamming you mayn't be shamming they mayn't be shamming
Perfect	V-ing perfect
I mayn't have shammed you mayn't have shammed he mayn't have shammed we mayn't have shammed you mayn't have shammed they mayn't have shammed	I mayn't have been shamming you mayn't have been shamming he mayn't have been shamming we mayn't have been shamming you mayn't have been shamming they mayn't have been shamming

Interrogative form

Simple form	V-ing form
may I sham? may you sham? may he sham? may we sham? may you sham? may they sham?	may I be shamming? may you be shamming? may he be shamming? may we be shamming? may you be shamming? may they be shamming?
Perfect	V-ing perfect
may I have shammed? may you have shammed? may he have shammed? may we have shammed? may you have shammed? may they have shammed?	may I have been shamming? may you have been shamming? may he have been shamming? may we have been shamming? may you have been shamming? may they have been shamming?

Interro-negative form

Simple form	V-ing form
mayn't I sham? mayn't you sham? mayn't he sham? mayn't we sham? mayn't you sham? mayn't they sham?	mayn't I be shamming? mayn't you be shamming? mayn't he be shamming? mayn't we be shamming? mayn't you be shamming? mayn't they be shamming?
Perfect	V-ing perfect
mayn't I have shammed? mayn't you have shammed? mayn't he have shammed? mayn't we have shammed? mayn't you have shammed? mayn't they have shammed?	mayn't I have been shamming? mayn't you have been shamming? mayn't he have been shamming? mayn't we have been shamming? mayn't you have been shamming? mayn't they have been shamming?