may stratify
Regular verb: stratify - stratified- stratified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may stratify
you may stratify
he may stratify
we may stratify
you may stratify
they may stratify 	I may be stratifying
you may be stratifying
he may be stratifying
we may be stratifying
you may be stratifying
they may be stratifying	I may have stratified
you may have stratified
he may have stratified
we may have stratified
you may have stratified
they may have stratified	I may have been stratifying
you may have been stratifying
he may have been stratifying
we may have been stratifying
you may have been stratifying
they may have been stratifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't stratify
you mayn't stratify
he mayn't stratify
we mayn't stratify
you mayn't stratify
they mayn't stratify 	I mayn't be stratifying
you mayn't be stratifying
he mayn't be stratifying
we mayn't be stratifying
you mayn't be stratifying
they mayn't be stratifying	I mayn't have stratified
you mayn't have stratified
he mayn't have stratified
we mayn't have stratified
you mayn't have stratified
they mayn't have stratified	I mayn't have been stratifying
you mayn't have been stratifying
he mayn't have been stratifying
we mayn't have been stratifying
you mayn't have been stratifying
they mayn't have been stratifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I stratify?
may you stratify?
may he stratify?
may we stratify?
may you stratify?
may they stratify? 	may I be stratifying?
may you be stratifying?
may he be stratifying?
may we be stratifying?
may you be stratifying?
may they be stratifying? 	may I have stratified?
may you have stratified?
may he have stratified?
may we have stratified?
may you have stratified?
may they have stratified? 	may I have been stratifying?
may you have been stratifying?
may he have been stratifying?
may we have been stratifying?
may you have been stratifying?
may they have been stratifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I stratify?
mayn't you stratify?
mayn't he stratify?
mayn't we stratify?
mayn't you stratify?
mayn't they stratify? 	mayn't I be stratifying?
mayn't you be stratifying?
mayn't he be stratifying?
mayn't we be stratifying?
mayn't you be stratifying?
mayn't they be stratifying? 	mayn't I have stratified?
mayn't you have stratified?
mayn't he have stratified?
mayn't we have stratified?
mayn't you have stratified?
mayn't they have stratified? 	mayn't I have been stratifying?
mayn't you have been stratifying?
mayn't he have been stratifying?
mayn't we have been stratifying?
mayn't you have been stratifying?
mayn't they have been stratifying?