could scent
Regular verb: scent - scented- scented

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could scent
you could scent
she could scent
we could scent
you could scent
they could scent 	I could be scenting
you could be scenting
she could be scenting
we could be scenting
you could be scenting
they could be scenting	I could have scented
you could have scented
she could have scented
we could have scented
you could have scented
they could have scented	I could have been scenting
you could have been scenting
she could have been scenting
we could have been scenting
you could have been scenting
they could have been scenting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't scent
you couldn't scent
she couldn't scent
we couldn't scent
you couldn't scent
they couldn't scent 	I couldn't be scenting
you couldn't be scenting
she couldn't be scenting
we couldn't be scenting
you couldn't be scenting
they couldn't be scenting	I couldn't have scented
you couldn't have scented
she couldn't have scented
we couldn't have scented
you couldn't have scented
they couldn't have scented	I couldn't have been scenting
you couldn't have been scenting
she couldn't have been scenting
we couldn't have been scenting
you couldn't have been scenting
they couldn't have been scenting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I scent?
could you scent?
could she scent?
could we scent?
could you scent?
could they scent? 	could I be scenting?
could you be scenting?
could she be scenting?
could we be scenting?
could you be scenting?
could they be scenting? 	could I have scented?
could you have scented?
could she have scented?
could we have scented?
could you have scented?
could they have scented? 	could I have been scenting?
could you have been scenting?
could she have been scenting?
could we have been scenting?
could you have been scenting?
could they have been scenting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I scent?
couldn't you scent?
couldn't she scent?
couldn't we scent?
couldn't you scent?
couldn't they scent? 	couldn't I be scenting?
couldn't you be scenting?
couldn't she be scenting?
couldn't we be scenting?
couldn't you be scenting?
couldn't they be scenting? 	couldn't I have scented?
couldn't you have scented?
couldn't she have scented?
couldn't we have scented?
couldn't you have scented?
couldn't they have scented? 	couldn't I have been scenting?
couldn't you have been scenting?
couldn't she have been scenting?
couldn't we have been scenting?
couldn't you have been scenting?
couldn't they have been scenting?