English verb conjugation
MAY RETCH

Regular verb: retch - retched - retched

Affirmation

Simple form	V-ing form
I may retch you may retch he may retch we may retch you may retch they may retch	I may be retching you may be retching he may be retching we may be retching you may be retching they may be retching
Perfect	V-ing perfect
I may have retched you may have retched he may have retched we may have retched you may have retched they may have retched	I may have been retching you may have been retching he may have been retching we may have been retching you may have been retching they may have been retching

Negation

Simple form	V-ing form
I mayn't retch you mayn't retch he mayn't retch we mayn't retch you mayn't retch they mayn't retch	I mayn't be retching you mayn't be retching he mayn't be retching we mayn't be retching you mayn't be retching they mayn't be retching
Perfect	V-ing perfect
I mayn't have retched you mayn't have retched he mayn't have retched we mayn't have retched you mayn't have retched they mayn't have retched	I mayn't have been retching you mayn't have been retching he mayn't have been retching we mayn't have been retching you mayn't have been retching they mayn't have been retching

Interrogative form

Simple form	V-ing form
may I retch? may you retch? may he retch? may we retch? may you retch? may they retch?	may I be retching? may you be retching? may he be retching? may we be retching? may you be retching? may they be retching?
Perfect	V-ing perfect
may I have retched? may you have retched? may he have retched? may we have retched? may you have retched? may they have retched?	may I have been retching? may you have been retching? may he have been retching? may we have been retching? may you have been retching? may they have been retching?

Interro-negative form

Simple form	V-ing form
mayn't I retch? mayn't you retch? mayn't he retch? mayn't we retch? mayn't you retch? mayn't they retch?	mayn't I be retching? mayn't you be retching? mayn't he be retching? mayn't we be retching? mayn't you be retching? mayn't they be retching?
Perfect	V-ing perfect
mayn't I have retched? mayn't you have retched? mayn't he have retched? mayn't we have retched? mayn't you have retched? mayn't they have retched?	mayn't I have been retching? mayn't you have been retching? mayn't he have been retching? mayn't we have been retching? mayn't you have been retching? mayn't they have been retching?