could mellow
Verbo regular: mellow - mellowed- mellowed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could mellow
you could mellow
he could mellow
we could mellow
you could mellow
they could mellow 	I could be mellowing
you could be mellowing
he could be mellowing
we could be mellowing
you could be mellowing
they could be mellowing	I could have mellowed
you could have mellowed
he could have mellowed
we could have mellowed
you could have mellowed
they could have mellowed	I could have been mellowing
you could have been mellowing
he could have been mellowing
we could have been mellowing
you could have been mellowing
they could have been mellowing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't mellow
you couldn't mellow
he couldn't mellow
we couldn't mellow
you couldn't mellow
they couldn't mellow 	I couldn't be mellowing
you couldn't be mellowing
he couldn't be mellowing
we couldn't be mellowing
you couldn't be mellowing
they couldn't be mellowing	I couldn't have mellowed
you couldn't have mellowed
he couldn't have mellowed
we couldn't have mellowed
you couldn't have mellowed
they couldn't have mellowed	I couldn't have been mellowing
you couldn't have been mellowing
he couldn't have been mellowing
we couldn't have been mellowing
you couldn't have been mellowing
they couldn't have been mellowing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I mellow?
could you mellow?
could he mellow?
could we mellow?
could you mellow?
could they mellow? 	could I be mellowing?
could you be mellowing?
could he be mellowing?
could we be mellowing?
could you be mellowing?
could they be mellowing? 	could I have mellowed?
could you have mellowed?
could he have mellowed?
could we have mellowed?
could you have mellowed?
could they have mellowed? 	could I have been mellowing?
could you have been mellowing?
could he have been mellowing?
could we have been mellowing?
could you have been mellowing?
could they have been mellowing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I mellow?
couldn't you mellow?
couldn't he mellow?
couldn't we mellow?
couldn't you mellow?
couldn't they mellow? 	couldn't I be mellowing?
couldn't you be mellowing?
couldn't he be mellowing?
couldn't we be mellowing?
couldn't you be mellowing?
couldn't they be mellowing? 	couldn't I have mellowed?
couldn't you have mellowed?
couldn't he have mellowed?
couldn't we have mellowed?
couldn't you have mellowed?
couldn't they have mellowed? 	couldn't I have been mellowing?
couldn't you have been mellowing?
couldn't he have been mellowing?
couldn't we have been mellowing?
couldn't you have been mellowing?
couldn't they have been mellowing?