may stonewall
Regular verb: stonewall - stonewalled- stonewalled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may stonewall
you may stonewall
he may stonewall
we may stonewall
you may stonewall
they may stonewall 	I may be stonewalling
you may be stonewalling
he may be stonewalling
we may be stonewalling
you may be stonewalling
they may be stonewalling	I may have stonewalled
you may have stonewalled
he may have stonewalled
we may have stonewalled
you may have stonewalled
they may have stonewalled	I may have been stonewalling
you may have been stonewalling
he may have been stonewalling
we may have been stonewalling
you may have been stonewalling
they may have been stonewalling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't stonewall
you mayn't stonewall
he mayn't stonewall
we mayn't stonewall
you mayn't stonewall
they mayn't stonewall 	I mayn't be stonewalling
you mayn't be stonewalling
he mayn't be stonewalling
we mayn't be stonewalling
you mayn't be stonewalling
they mayn't be stonewalling	I mayn't have stonewalled
you mayn't have stonewalled
he mayn't have stonewalled
we mayn't have stonewalled
you mayn't have stonewalled
they mayn't have stonewalled	I mayn't have been stonewalling
you mayn't have been stonewalling
he mayn't have been stonewalling
we mayn't have been stonewalling
you mayn't have been stonewalling
they mayn't have been stonewalling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I stonewall?
may you stonewall?
may he stonewall?
may we stonewall?
may you stonewall?
may they stonewall? 	may I be stonewalling?
may you be stonewalling?
may he be stonewalling?
may we be stonewalling?
may you be stonewalling?
may they be stonewalling? 	may I have stonewalled?
may you have stonewalled?
may he have stonewalled?
may we have stonewalled?
may you have stonewalled?
may they have stonewalled? 	may I have been stonewalling?
may you have been stonewalling?
may he have been stonewalling?
may we have been stonewalling?
may you have been stonewalling?
may they have been stonewalling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I stonewall?
mayn't you stonewall?
mayn't he stonewall?
mayn't we stonewall?
mayn't you stonewall?
mayn't they stonewall? 	mayn't I be stonewalling?
mayn't you be stonewalling?
mayn't he be stonewalling?
mayn't we be stonewalling?
mayn't you be stonewalling?
mayn't they be stonewalling? 	mayn't I have stonewalled?
mayn't you have stonewalled?
mayn't he have stonewalled?
mayn't we have stonewalled?
mayn't you have stonewalled?
mayn't they have stonewalled? 	mayn't I have been stonewalling?
mayn't you have been stonewalling?
mayn't he have been stonewalling?
mayn't we have been stonewalling?
mayn't you have been stonewalling?
mayn't they have been stonewalling?