could catalog
Regular verb: catalog - cataloged- cataloged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could catalog
you could catalog
he could catalog
we could catalog
you could catalog
they could catalog 	I could be cataloging
you could be cataloging
he could be cataloging
we could be cataloging
you could be cataloging
they could be cataloging	I could have cataloged
you could have cataloged
he could have cataloged
we could have cataloged
you could have cataloged
they could have cataloged	I could have been cataloging
you could have been cataloging
he could have been cataloging
we could have been cataloging
you could have been cataloging
they could have been cataloging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't catalog
you couldn't catalog
he couldn't catalog
we couldn't catalog
you couldn't catalog
they couldn't catalog 	I couldn't be cataloging
you couldn't be cataloging
he couldn't be cataloging
we couldn't be cataloging
you couldn't be cataloging
they couldn't be cataloging	I couldn't have cataloged
you couldn't have cataloged
he couldn't have cataloged
we couldn't have cataloged
you couldn't have cataloged
they couldn't have cataloged	I couldn't have been cataloging
you couldn't have been cataloging
he couldn't have been cataloging
we couldn't have been cataloging
you couldn't have been cataloging
they couldn't have been cataloging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I catalog?
could you catalog?
could he catalog?
could we catalog?
could you catalog?
could they catalog? 	could I be cataloging?
could you be cataloging?
could he be cataloging?
could we be cataloging?
could you be cataloging?
could they be cataloging? 	could I have cataloged?
could you have cataloged?
could he have cataloged?
could we have cataloged?
could you have cataloged?
could they have cataloged? 	could I have been cataloging?
could you have been cataloging?
could he have been cataloging?
could we have been cataloging?
could you have been cataloging?
could they have been cataloging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I catalog?
couldn't you catalog?
couldn't he catalog?
couldn't we catalog?
couldn't you catalog?
couldn't they catalog? 	couldn't I be cataloging?
couldn't you be cataloging?
couldn't he be cataloging?
couldn't we be cataloging?
couldn't you be cataloging?
couldn't they be cataloging? 	couldn't I have cataloged?
couldn't you have cataloged?
couldn't he have cataloged?
couldn't we have cataloged?
couldn't you have cataloged?
couldn't they have cataloged? 	couldn't I have been cataloging?
couldn't you have been cataloging?
couldn't he have been cataloging?
couldn't we have been cataloging?
couldn't you have been cataloging?
couldn't they have been cataloging?