may quicken
Regular verb: quicken - quickened- quickened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may quicken
you may quicken
he may quicken
we may quicken
you may quicken
they may quicken 	I may be quickening
you may be quickening
he may be quickening
we may be quickening
you may be quickening
they may be quickening	I may have quickened
you may have quickened
he may have quickened
we may have quickened
you may have quickened
they may have quickened	I may have been quickening
you may have been quickening
he may have been quickening
we may have been quickening
you may have been quickening
they may have been quickening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not quicken
you may not quicken
he may not quicken
we may not quicken
you may not quicken
they may not quicken 	I may not be quickening
you may not be quickening
he may not be quickening
we may not be quickening
you may not be quickening
they may not be quickening	I may not have quickened
you may not have quickened
he may not have quickened
we may not have quickened
you may not have quickened
they may not have quickened	I may not have been quickening
you may not have been quickening
he may not have been quickening
we may not have been quickening
you may not have been quickening
they may not have been quickening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I quicken?
may you quicken?
may he quicken?
may we quicken?
may you quicken?
may they quicken? 	may I be quickening?
may you be quickening?
may he be quickening?
may we be quickening?
may you be quickening?
may they be quickening? 	may I have quickened?
may you have quickened?
may he have quickened?
may we have quickened?
may you have quickened?
may they have quickened? 	may I have been quickening?
may you have been quickening?
may he have been quickening?
may we have been quickening?
may you have been quickening?
may they have been quickening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not quicken?
may you not quicken?
may he not quicken?
may we not quicken?
may you not quicken?
may they not quicken? 	may I not be quickening?
may you not be quickening?
may he not be quickening?
may we not be quickening?
may you not be quickening?
may they not be quickening? 	may I not have quickened?
may you not have quickened?
may he not have quickened?
may we not have quickened?
may you not have quickened?
may they not have quickened? 	may I not have been quickening?
may you not have been quickening?
may he not have been quickening?
may we not have been quickening?
may you not have been quickening?
may they not have been quickening?