can mellow
Regular verb: mellow - mellowed- mellowed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can mellow
you can mellow
she can mellow
we can mellow
you can mellow
they can mellow 	I can be mellowing
you can be mellowing
she can be mellowing
we can be mellowing
you can be mellowing
they can be mellowing	I can have mellowed
you can have mellowed
she can have mellowed
we can have mellowed
you can have mellowed
they can have mellowed	I can have been mellowing
you can have been mellowing
she can have been mellowing
we can have been mellowing
you can have been mellowing
they can have been mellowing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't mellow
you can't mellow
she can't mellow
we can't mellow
you can't mellow
they can't mellow 	I can't be mellowing
you can't be mellowing
she can't be mellowing
we can't be mellowing
you can't be mellowing
they can't be mellowing	I can't have mellowed
you can't have mellowed
she can't have mellowed
we can't have mellowed
you can't have mellowed
they can't have mellowed	I can't have been mellowing
you can't have been mellowing
she can't have been mellowing
we can't have been mellowing
you can't have been mellowing
they can't have been mellowing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I mellow?
can you mellow?
can she mellow?
can we mellow?
can you mellow?
can they mellow? 	can I be mellowing?
can you be mellowing?
can she be mellowing?
can we be mellowing?
can you be mellowing?
can they be mellowing? 	can I have mellowed?
can you have mellowed?
can she have mellowed?
can we have mellowed?
can you have mellowed?
can they have mellowed? 	can I have been mellowing?
can you have been mellowing?
can she have been mellowing?
can we have been mellowing?
can you have been mellowing?
can they have been mellowing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I mellow?
can't you mellow?
can't she mellow?
can't we mellow?
can't you mellow?
can't they mellow? 	can't I be mellowing?
can't you be mellowing?
can't she be mellowing?
can't we be mellowing?
can't you be mellowing?
can't they be mellowing? 	can't I have mellowed?
can't you have mellowed?
can't she have mellowed?
can't we have mellowed?
can't you have mellowed?
can't they have mellowed? 	can't I have been mellowing?
can't you have been mellowing?
can't she have been mellowing?
can't we have been mellowing?
can't you have been mellowing?
can't they have been mellowing?