English verb conjugation
MAY COUNTERSINK

Irregular verb: countersink - countersank - countersunk

Affirmation

Simple form	V-ing form
I may countersink you may countersink he may countersink we may countersink you may countersink they may countersink	I may be countersinking you may be countersinking he may be countersinking we may be countersinking you may be countersinking they may be countersinking
Perfect	V-ing perfect
I may have countersunk you may have countersunk he may have countersunk we may have countersunk you may have countersunk they may have countersunk	I may have been countersinking you may have been countersinking he may have been countersinking we may have been countersinking you may have been countersinking they may have been countersinking

Negation

Simple form	V-ing form
I mayn't countersink you mayn't countersink he mayn't countersink we mayn't countersink you mayn't countersink they mayn't countersink	I mayn't be countersinking you mayn't be countersinking he mayn't be countersinking we mayn't be countersinking you mayn't be countersinking they mayn't be countersinking
Perfect	V-ing perfect
I mayn't have countersunk you mayn't have countersunk he mayn't have countersunk we mayn't have countersunk you mayn't have countersunk they mayn't have countersunk	I mayn't have been countersinking you mayn't have been countersinking he mayn't have been countersinking we mayn't have been countersinking you mayn't have been countersinking they mayn't have been countersinking

Interrogative form

Simple form	V-ing form
may I countersink? may you countersink? may he countersink? may we countersink? may you countersink? may they countersink?	may I be countersinking? may you be countersinking? may he be countersinking? may we be countersinking? may you be countersinking? may they be countersinking?
Perfect	V-ing perfect
may I have countersunk? may you have countersunk? may he have countersunk? may we have countersunk? may you have countersunk? may they have countersunk?	may I have been countersinking? may you have been countersinking? may he have been countersinking? may we have been countersinking? may you have been countersinking? may they have been countersinking?

Interro-negative form

Simple form	V-ing form
mayn't I countersink? mayn't you countersink? mayn't he countersink? mayn't we countersink? mayn't you countersink? mayn't they countersink?	mayn't I be countersinking? mayn't you be countersinking? mayn't he be countersinking? mayn't we be countersinking? mayn't you be countersinking? mayn't they be countersinking?
Perfect	V-ing perfect
mayn't I have countersunk? mayn't you have countersunk? mayn't he have countersunk? mayn't we have countersunk? mayn't you have countersunk? mayn't they have countersunk?	mayn't I have been countersinking? mayn't you have been countersinking? mayn't he have been countersinking? mayn't we have been countersinking? mayn't you have been countersinking? mayn't they have been countersinking?