I may shutter you may shutter he may shutter we may shutter you may shutter they may shutter
V-ing form
I may be shuttering you may be shuttering he may be shuttering we may be shuttering you may be shuttering they may be shuttering
Perfect
I may have shuttered you may have shuttered he may have shuttered we may have shuttered you may have shuttered they may have shuttered
V-ing perfect
I may have been shuttering you may have been shuttering he may have been shuttering we may have been shuttering you may have been shuttering they may have been shuttering
Negation
Simple form
I may not shutter you may not shutter he may not shutter we may not shutter you may not shutter they may not shutter
V-ing form
I may not be shuttering you may not be shuttering he may not be shuttering we may not be shuttering you may not be shuttering they may not be shuttering
Perfect
I may not have shuttered you may not have shuttered he may not have shuttered we may not have shuttered you may not have shuttered they may not have shuttered
V-ing perfect
I may not have been shuttering you may not have been shuttering he may not have been shuttering we may not have been shuttering you may not have been shuttering they may not have been shuttering
Interrogative form
Simple form
may I shutter? may you shutter? may he shutter? may we shutter? may you shutter? may they shutter?
V-ing form
may I be shuttering? may you be shuttering? may he be shuttering? may we be shuttering? may you be shuttering? may they be shuttering?
Perfect
may I have shuttered? may you have shuttered? may he have shuttered? may we have shuttered? may you have shuttered? may they have shuttered?
V-ing perfect
may I have been shuttering? may you have been shuttering? may he have been shuttering? may we have been shuttering? may you have been shuttering? may they have been shuttering?
Interro-negative form
Simple form
may I not shutter? may you not shutter? may he not shutter? may we not shutter? may you not shutter? may they not shutter?
V-ing form
may I not be shuttering? may you not be shuttering? may he not be shuttering? may we not be shuttering? may you not be shuttering? may they not be shuttering?
Perfect
may I not have shuttered? may you not have shuttered? may he not have shuttered? may we not have shuttered? may you not have shuttered? may they not have shuttered?
V-ing perfect
may I not have been shuttering? may you not have been shuttering? may he not have been shuttering? may we not have been shuttering? may you not have been shuttering? may they not have been shuttering?