English verb conjugation
COULD LOG

Regular verb: log - logged - logged

Affirmation

Simple form	V-ing form
I could log you could log he could log we could log you could log they could log	I could be logging you could be logging he could be logging we could be logging you could be logging they could be logging
Perfect	V-ing perfect
I could have logged you could have logged he 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 he 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
I couldn't log you couldn't log he couldn't log we couldn't log you couldn't log they couldn't log	I couldn't be logging you couldn't be logging he couldn't be logging we couldn't be logging you couldn't be logging they couldn't be logging
Perfect	V-ing perfect
I couldn't have logged you couldn't have logged he couldn't have logged we couldn't have logged you couldn't have logged they couldn't have logged	I couldn't have been logging you couldn't have been logging he couldn't have been logging we couldn't have been logging you couldn't have been logging they couldn't have been logging

Interrogative form

Simple form	V-ing form
could I log? could you log? could he log? could we log? could you log? could they log?	could I be logging? could you be logging? could he be logging? could we be logging? could you be logging? could they be logging?
Perfect	V-ing perfect
could I have logged? could you have logged? could he 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 he 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
couldn't I log? couldn't you log? couldn't he log? couldn't we log? couldn't you log? couldn't they log?	couldn't I be logging? couldn't you be logging? couldn't he be logging? couldn't we be logging? couldn't you be logging? couldn't they be logging?
Perfect	V-ing perfect
couldn't I have logged? couldn't you have logged? couldn't he have logged? couldn't we have logged? couldn't you have logged? couldn't they have logged?	couldn't I have been logging? couldn't you have been logging? couldn't he have been logging? couldn't we have been logging? couldn't you have been logging? couldn't they have been logging?