could catalog
Regular verb: catalog - cataloged- cataloged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could catalog
you could catalog
she could catalog
we could catalog
you could catalog
they could catalog 	I could be cataloging
you could be cataloging
she could be cataloging
we could be cataloging
you could be cataloging
they could be cataloging	I could have cataloged
you could have cataloged
she 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
she 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 could not catalog
you could not catalog
she could not catalog
we could not catalog
you could not catalog
they could not catalog 	I could not be cataloging
you could not be cataloging
she could not be cataloging
we could not be cataloging
you could not be cataloging
they could not be cataloging	I could not have cataloged
you could not have cataloged
she could not have cataloged
we could not have cataloged
you could not have cataloged
they could not have cataloged	I could not have been cataloging
you could not have been cataloging
she could not have been cataloging
we could not have been cataloging
you could not have been cataloging
they could not have been cataloging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I catalog?
could you catalog?
could she catalog?
could we catalog?
could you catalog?
could they catalog? 	could I be cataloging?
could you be cataloging?
could she be cataloging?
could we be cataloging?
could you be cataloging?
could they be cataloging? 	could I have cataloged?
could you have cataloged?
could she 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 she 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 	
could I not catalog?
could you not catalog?
could she not catalog?
could we not catalog?
could you not catalog?
could they not catalog? 	could I not be cataloging?
could you not be cataloging?
could she not be cataloging?
could we not be cataloging?
could you not be cataloging?
could they not be cataloging? 	could I not have cataloged?
could you not have cataloged?
could she not have cataloged?
could we not have cataloged?
could you not have cataloged?
could they not have cataloged? 	could I not have been cataloging?
could you not have been cataloging?
could she not have been cataloging?
could we not have been cataloging?
could you not have been cataloging?
could they not have been cataloging?