could inventory
Regular verb: inventory - inventoried- inventoried

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could inventory
you could inventory
she could inventory
we could inventory
you could inventory
they could inventory 	I could be inventorying
you could be inventorying
she could be inventorying
we could be inventorying
you could be inventorying
they could be inventorying	I could have inventoried
you could have inventoried
she could have inventoried
we could have inventoried
you could have inventoried
they could have inventoried	I could have been inventorying
you could have been inventorying
she could have been inventorying
we could have been inventorying
you could have been inventorying
they could have been inventorying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't inventory
you couldn't inventory
she couldn't inventory
we couldn't inventory
you couldn't inventory
they couldn't inventory 	I couldn't be inventorying
you couldn't be inventorying
she couldn't be inventorying
we couldn't be inventorying
you couldn't be inventorying
they couldn't be inventorying	I couldn't have inventoried
you couldn't have inventoried
she couldn't have inventoried
we couldn't have inventoried
you couldn't have inventoried
they couldn't have inventoried	I couldn't have been inventorying
you couldn't have been inventorying
she couldn't have been inventorying
we couldn't have been inventorying
you couldn't have been inventorying
they couldn't have been inventorying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I inventory?
could you inventory?
could she inventory?
could we inventory?
could you inventory?
could they inventory? 	could I be inventorying?
could you be inventorying?
could she be inventorying?
could we be inventorying?
could you be inventorying?
could they be inventorying? 	could I have inventoried?
could you have inventoried?
could she have inventoried?
could we have inventoried?
could you have inventoried?
could they have inventoried? 	could I have been inventorying?
could you have been inventorying?
could she have been inventorying?
could we have been inventorying?
could you have been inventorying?
could they have been inventorying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I inventory?
couldn't you inventory?
couldn't she inventory?
couldn't we inventory?
couldn't you inventory?
couldn't they inventory? 	couldn't I be inventorying?
couldn't you be inventorying?
couldn't she be inventorying?
couldn't we be inventorying?
couldn't you be inventorying?
couldn't they be inventorying? 	couldn't I have inventoried?
couldn't you have inventoried?
couldn't she have inventoried?
couldn't we have inventoried?
couldn't you have inventoried?
couldn't they have inventoried? 	couldn't I have been inventorying?
couldn't you have been inventorying?
couldn't she have been inventorying?
couldn't we have been inventorying?
couldn't you have been inventorying?
couldn't they have been inventorying?