may unclog
Regular verb: unclog - unclogged- unclogged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may unclog
you may unclog
he may unclog
we may unclog
you may unclog
they may unclog 	I may be unclogging
you may be unclogging
he may be unclogging
we may be unclogging
you may be unclogging
they may be unclogging	I may have unclogged
you may have unclogged
he may have unclogged
we may have unclogged
you may have unclogged
they may have unclogged	I may have been unclogging
you may have been unclogging
he may have been unclogging
we may have been unclogging
you may have been unclogging
they may have been unclogging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't unclog
you mayn't unclog
he mayn't unclog
we mayn't unclog
you mayn't unclog
they mayn't unclog 	I mayn't be unclogging
you mayn't be unclogging
he mayn't be unclogging
we mayn't be unclogging
you mayn't be unclogging
they mayn't be unclogging	I mayn't have unclogged
you mayn't have unclogged
he mayn't have unclogged
we mayn't have unclogged
you mayn't have unclogged
they mayn't have unclogged	I mayn't have been unclogging
you mayn't have been unclogging
he mayn't have been unclogging
we mayn't have been unclogging
you mayn't have been unclogging
they mayn't have been unclogging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I unclog?
may you unclog?
may he unclog?
may we unclog?
may you unclog?
may they unclog? 	may I be unclogging?
may you be unclogging?
may he be unclogging?
may we be unclogging?
may you be unclogging?
may they be unclogging? 	may I have unclogged?
may you have unclogged?
may he have unclogged?
may we have unclogged?
may you have unclogged?
may they have unclogged? 	may I have been unclogging?
may you have been unclogging?
may he have been unclogging?
may we have been unclogging?
may you have been unclogging?
may they have been unclogging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I unclog?
mayn't you unclog?
mayn't he unclog?
mayn't we unclog?
mayn't you unclog?
mayn't they unclog? 	mayn't I be unclogging?
mayn't you be unclogging?
mayn't he be unclogging?
mayn't we be unclogging?
mayn't you be unclogging?
mayn't they be unclogging? 	mayn't I have unclogged?
mayn't you have unclogged?
mayn't he have unclogged?
mayn't we have unclogged?
mayn't you have unclogged?
mayn't they have unclogged? 	mayn't I have been unclogging?
mayn't you have been unclogging?
mayn't he have been unclogging?
mayn't we have been unclogging?
mayn't you have been unclogging?
mayn't they have been unclogging?