Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could smoke smoke you could smoke smoke he could smoke smoke we could smoke smoke you could smoke smoke they could smoke smoke
V-ing form
I could be smoke smoking you could be smoke smoking he could be smoke smoking we could be smoke smoking you could be smoke smoking they could be smoke smoking
Perfect
I could have smoke smoked you could have smoke smoked he could have smoke smoked we could have smoke smoked you could have smoke smoked they could have smoke smoked
V-ing perfect
I could have been smoke smoking you could have been smoke smoking he could have been smoke smoking we could have been smoke smoking you could have been smoke smoking they could have been smoke smoking
Negation
Simple form
I could not smoke smoke you could not smoke smoke he could not smoke smoke we could not smoke smoke you could not smoke smoke they could not smoke smoke
V-ing form
I could not be smoke smoking you could not be smoke smoking he could not be smoke smoking we could not be smoke smoking you could not be smoke smoking they could not be smoke smoking
Perfect
I could not have smoke smoked you could not have smoke smoked he could not have smoke smoked we could not have smoke smoked you could not have smoke smoked they could not have smoke smoked
V-ing perfect
I could not have been smoke smoking you could not have been smoke smoking he could not have been smoke smoking we could not have been smoke smoking you could not have been smoke smoking they could not have been smoke smoking
Interrogative form
Simple form
could I smoke smoke? could you smoke smoke? could he smoke smoke? could we smoke smoke? could you smoke smoke? could they smoke smoke?
V-ing form
could I be smoke smoking? could you be smoke smoking? could he be smoke smoking? could we be smoke smoking? could you be smoke smoking? could they be smoke smoking?
Perfect
could I have smoke smoked? could you have smoke smoked? could he have smoke smoked? could we have smoke smoked? could you have smoke smoked? could they have smoke smoked?
V-ing perfect
could I have been smoke smoking? could you have been smoke smoking? could he have been smoke smoking? could we have been smoke smoking? could you have been smoke smoking? could they have been smoke smoking?
Interro-negative form
Simple form
could I not smoke smoke? could you not smoke smoke? could he not smoke smoke? could we not smoke smoke? could you not smoke smoke? could they not smoke smoke?
V-ing form
could I not be smoke smoking? could you not be smoke smoking? could he not be smoke smoking? could we not be smoke smoking? could you not be smoke smoking? could they not be smoke smoking?
Perfect
could I not have smoke smoked? could you not have smoke smoked? could he not have smoke smoked? could we not have smoke smoked? could you not have smoke smoked? could they not have smoke smoked?
V-ing perfect
could I not have been smoke smoking? could you not have been smoke smoking? could he not have been smoke smoking? could we not have been smoke smoking? could you not have been smoke smoking? could they not have been smoke smoking?