may richen
Regular verb: richen - richened- richened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may richen
you may richen
he may richen
we may richen
you may richen
they may richen 	I may be richening
you may be richening
he may be richening
we may be richening
you may be richening
they may be richening	I may have richened
you may have richened
he may have richened
we may have richened
you may have richened
they may have richened	I may have been richening
you may have been richening
he may have been richening
we may have been richening
you may have been richening
they may have been richening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not richen
you may not richen
he may not richen
we may not richen
you may not richen
they may not richen 	I may not be richening
you may not be richening
he may not be richening
we may not be richening
you may not be richening
they may not be richening	I may not have richened
you may not have richened
he may not have richened
we may not have richened
you may not have richened
they may not have richened	I may not have been richening
you may not have been richening
he may not have been richening
we may not have been richening
you may not have been richening
they may not have been richening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I richen?
may you richen?
may he richen?
may we richen?
may you richen?
may they richen? 	may I be richening?
may you be richening?
may he be richening?
may we be richening?
may you be richening?
may they be richening? 	may I have richened?
may you have richened?
may he have richened?
may we have richened?
may you have richened?
may they have richened? 	may I have been richening?
may you have been richening?
may he have been richening?
may we have been richening?
may you have been richening?
may they have been richening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not richen?
may you not richen?
may he not richen?
may we not richen?
may you not richen?
may they not richen? 	may I not be richening?
may you not be richening?
may he not be richening?
may we not be richening?
may you not be richening?
may they not be richening? 	may I not have richened?
may you not have richened?
may he not have richened?
may we not have richened?
may you not have richened?
may they not have richened? 	may I not have been richening?
may you not have been richening?
may he not have been richening?
may we not have been richening?
may you not have been richening?
may they not have been richening?