I may countermarch you may countermarch he may countermarch we may countermarch you may countermarch they may countermarch
V-ing form
I may be countermarching you may be countermarching he may be countermarching we may be countermarching you may be countermarching they may be countermarching
Perfect
I may have countermarched you may have countermarched he may have countermarched we may have countermarched you may have countermarched they may have countermarched
V-ing perfect
I may have been countermarching you may have been countermarching he may have been countermarching we may have been countermarching you may have been countermarching they may have been countermarching
Negation
Simple form
I may not countermarch you may not countermarch he may not countermarch we may not countermarch you may not countermarch they may not countermarch
V-ing form
I may not be countermarching you may not be countermarching he may not be countermarching we may not be countermarching you may not be countermarching they may not be countermarching
Perfect
I may not have countermarched you may not have countermarched he may not have countermarched we may not have countermarched you may not have countermarched they may not have countermarched
V-ing perfect
I may not have been countermarching you may not have been countermarching he may not have been countermarching we may not have been countermarching you may not have been countermarching they may not have been countermarching
Interrogative form
Simple form
may I countermarch? may you countermarch? may he countermarch? may we countermarch? may you countermarch? may they countermarch?
V-ing form
may I be countermarching? may you be countermarching? may he be countermarching? may we be countermarching? may you be countermarching? may they be countermarching?
Perfect
may I have countermarched? may you have countermarched? may he have countermarched? may we have countermarched? may you have countermarched? may they have countermarched?
V-ing perfect
may I have been countermarching? may you have been countermarching? may he have been countermarching? may we have been countermarching? may you have been countermarching? may they have been countermarching?
Interro-negative form
Simple form
may I not countermarch? may you not countermarch? may he not countermarch? may we not countermarch? may you not countermarch? may they not countermarch?
V-ing form
may I not be countermarching? may you not be countermarching? may he not be countermarching? may we not be countermarching? may you not be countermarching? may they not be countermarching?
Perfect
may I not have countermarched? may you not have countermarched? may he not have countermarched? may we not have countermarched? may you not have countermarched? may they not have countermarched?
V-ing perfect
may I not have been countermarching? may you not have been countermarching? may he not have been countermarching? may we not have been countermarching? may you not have been countermarching? may they not have been countermarching?