may prewash
Regular verb: prewash - prewashed- prewashed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may prewash
you may prewash
she may prewash
we may prewash
you may prewash
they may prewash 	I may be prewashing
you may be prewashing
she may be prewashing
we may be prewashing
you may be prewashing
they may be prewashing	I may have prewashed
you may have prewashed
she may have prewashed
we may have prewashed
you may have prewashed
they may have prewashed	I may have been prewashing
you may have been prewashing
she may have been prewashing
we may have been prewashing
you may have been prewashing
they may have been prewashing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't prewash
you mayn't prewash
she mayn't prewash
we mayn't prewash
you mayn't prewash
they mayn't prewash 	I mayn't be prewashing
you mayn't be prewashing
she mayn't be prewashing
we mayn't be prewashing
you mayn't be prewashing
they mayn't be prewashing	I mayn't have prewashed
you mayn't have prewashed
she mayn't have prewashed
we mayn't have prewashed
you mayn't have prewashed
they mayn't have prewashed	I mayn't have been prewashing
you mayn't have been prewashing
she mayn't have been prewashing
we mayn't have been prewashing
you mayn't have been prewashing
they mayn't have been prewashing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I prewash?
may you prewash?
may she prewash?
may we prewash?
may you prewash?
may they prewash? 	may I be prewashing?
may you be prewashing?
may she be prewashing?
may we be prewashing?
may you be prewashing?
may they be prewashing? 	may I have prewashed?
may you have prewashed?
may she have prewashed?
may we have prewashed?
may you have prewashed?
may they have prewashed? 	may I have been prewashing?
may you have been prewashing?
may she have been prewashing?
may we have been prewashing?
may you have been prewashing?
may they have been prewashing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I prewash?
mayn't you prewash?
mayn't she prewash?
mayn't we prewash?
mayn't you prewash?
mayn't they prewash? 	mayn't I be prewashing?
mayn't you be prewashing?
mayn't she be prewashing?
mayn't we be prewashing?
mayn't you be prewashing?
mayn't they be prewashing? 	mayn't I have prewashed?
mayn't you have prewashed?
mayn't she have prewashed?
mayn't we have prewashed?
mayn't you have prewashed?
mayn't they have prewashed? 	mayn't I have been prewashing?
mayn't you have been prewashing?
mayn't she have been prewashing?
mayn't we have been prewashing?
mayn't you have been prewashing?
mayn't they have been prewashing?