may half-mast
Regular verb: half-mast - half-masted- half-masted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may half-mast
you may half-mast
he may half-mast
we may half-mast
you may half-mast
they may half-mast 	I may be half-masting
you may be half-masting
he may be half-masting
we may be half-masting
you may be half-masting
they may be half-masting	I may have half-masted
you may have half-masted
he may have half-masted
we may have half-masted
you may have half-masted
they may have half-masted	I may have been half-masting
you may have been half-masting
he may have been half-masting
we may have been half-masting
you may have been half-masting
they may have been half-masting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't half-mast
you mayn't half-mast
he mayn't half-mast
we mayn't half-mast
you mayn't half-mast
they mayn't half-mast 	I mayn't be half-masting
you mayn't be half-masting
he mayn't be half-masting
we mayn't be half-masting
you mayn't be half-masting
they mayn't be half-masting	I mayn't have half-masted
you mayn't have half-masted
he mayn't have half-masted
we mayn't have half-masted
you mayn't have half-masted
they mayn't have half-masted	I mayn't have been half-masting
you mayn't have been half-masting
he mayn't have been half-masting
we mayn't have been half-masting
you mayn't have been half-masting
they mayn't have been half-masting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I half-mast?
may you half-mast?
may he half-mast?
may we half-mast?
may you half-mast?
may they half-mast? 	may I be half-masting?
may you be half-masting?
may he be half-masting?
may we be half-masting?
may you be half-masting?
may they be half-masting? 	may I have half-masted?
may you have half-masted?
may he have half-masted?
may we have half-masted?
may you have half-masted?
may they have half-masted? 	may I have been half-masting?
may you have been half-masting?
may he have been half-masting?
may we have been half-masting?
may you have been half-masting?
may they have been half-masting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I half-mast?
mayn't you half-mast?
mayn't he half-mast?
mayn't we half-mast?
mayn't you half-mast?
mayn't they half-mast? 	mayn't I be half-masting?
mayn't you be half-masting?
mayn't he be half-masting?
mayn't we be half-masting?
mayn't you be half-masting?
mayn't they be half-masting? 	mayn't I have half-masted?
mayn't you have half-masted?
mayn't he have half-masted?
mayn't we have half-masted?
mayn't you have half-masted?
mayn't they have half-masted? 	mayn't I have been half-masting?
mayn't you have been half-masting?
mayn't he have been half-masting?
mayn't we have been half-masting?
mayn't you have been half-masting?
mayn't they have been half-masting?