may skulk
Regular verb: skulk - skulked- skulked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may skulk
you may skulk
he may skulk
we may skulk
you may skulk
they may skulk 	I may be skulking
you may be skulking
he may be skulking
we may be skulking
you may be skulking
they may be skulking	I may have skulked
you may have skulked
he may have skulked
we may have skulked
you may have skulked
they may have skulked	I may have been skulking
you may have been skulking
he may have been skulking
we may have been skulking
you may have been skulking
they may have been skulking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't skulk
you mayn't skulk
he mayn't skulk
we mayn't skulk
you mayn't skulk
they mayn't skulk 	I mayn't be skulking
you mayn't be skulking
he mayn't be skulking
we mayn't be skulking
you mayn't be skulking
they mayn't be skulking	I mayn't have skulked
you mayn't have skulked
he mayn't have skulked
we mayn't have skulked
you mayn't have skulked
they mayn't have skulked	I mayn't have been skulking
you mayn't have been skulking
he mayn't have been skulking
we mayn't have been skulking
you mayn't have been skulking
they mayn't have been skulking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I skulk?
may you skulk?
may he skulk?
may we skulk?
may you skulk?
may they skulk? 	may I be skulking?
may you be skulking?
may he be skulking?
may we be skulking?
may you be skulking?
may they be skulking? 	may I have skulked?
may you have skulked?
may he have skulked?
may we have skulked?
may you have skulked?
may they have skulked? 	may I have been skulking?
may you have been skulking?
may he have been skulking?
may we have been skulking?
may you have been skulking?
may they have been skulking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I skulk?
mayn't you skulk?
mayn't he skulk?
mayn't we skulk?
mayn't you skulk?
mayn't they skulk? 	mayn't I be skulking?
mayn't you be skulking?
mayn't he be skulking?
mayn't we be skulking?
mayn't you be skulking?
mayn't they be skulking? 	mayn't I have skulked?
mayn't you have skulked?
mayn't he have skulked?
mayn't we have skulked?
mayn't you have skulked?
mayn't they have skulked? 	mayn't I have been skulking?
mayn't you have been skulking?
mayn't he have been skulking?
mayn't we have been skulking?
mayn't you have been skulking?
mayn't they have been skulking?