could log
Regular verb: log - logged- logged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could log
you could log
she could log
we could log
you could log
they could log 	I could be logging
you could be logging
she could be logging
we could be logging
you could be logging
they could be logging	I could have logged
you could have logged
she could have logged
we could have logged
you could have logged
they could have logged	I could have been logging
you could have been logging
she could have been logging
we could have been logging
you could have been logging
they could have been logging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not log
you could not log
she could not log
we could not log
you could not log
they could not log 	I could not be logging
you could not be logging
she could not be logging
we could not be logging
you could not be logging
they could not be logging	I could not have logged
you could not have logged
she could not have logged
we could not have logged
you could not have logged
they could not have logged	I could not have been logging
you could not have been logging
she could not have been logging
we could not have been logging
you could not have been logging
they could not have been logging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I log?
could you log?
could she log?
could we log?
could you log?
could they log? 	could I be logging?
could you be logging?
could she be logging?
could we be logging?
could you be logging?
could they be logging? 	could I have logged?
could you have logged?
could she have logged?
could we have logged?
could you have logged?
could they have logged? 	could I have been logging?
could you have been logging?
could she have been logging?
could we have been logging?
could you have been logging?
could they have been logging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not log?
could you not log?
could she not log?
could we not log?
could you not log?
could they not log? 	could I not be logging?
could you not be logging?
could she not be logging?
could we not be logging?
could you not be logging?
could they not be logging? 	could I not have logged?
could you not have logged?
could she not have logged?
could we not have logged?
could you not have logged?
could they not have logged? 	could I not have been logging?
could you not have been logging?
could she not have been logging?
could we not have been logging?
could you not have been logging?
could they not have been logging?