I can meet you can meet he can meet we can meet you can meet they can meet
V-ing form
I can be meeting you can be meeting he can be meeting we can be meeting you can be meeting they can be meeting
Perfect
I can have met you can have met he can have met we can have met you can have met they can have met
V-ing perfect
I can have been meeting you can have been meeting he can have been meeting we can have been meeting you can have been meeting they can have been meeting
Negation
Simple form
I cannot meet you cannot meet he cannot meet we cannot meet you cannot meet they cannot meet
V-ing form
I cannot be meeting you cannot be meeting he cannot be meeting we cannot be meeting you cannot be meeting they cannot be meeting
Perfect
I cannot have met you cannot have met he cannot have met we cannot have met you cannot have met they cannot have met
V-ing perfect
I cannot have been meeting you cannot have been meeting he cannot have been meeting we cannot have been meeting you cannot have been meeting they cannot have been meeting
Interrogative form
Simple form
can I meet? can you meet? can he meet? can we meet? can you meet? can they meet?
V-ing form
can I be meeting? can you be meeting? can he be meeting? can we be meeting? can you be meeting? can they be meeting?
Perfect
can I have met? can you have met? can he have met? can we have met? can you have met? can they have met?
V-ing perfect
can I have been meeting? can you have been meeting? can he have been meeting? can we have been meeting? can you have been meeting? can they have been meeting?
Interro-negative form
Simple form
can I not meet? can you not meet? can he not meet? can we not meet? can you not meet? can they not meet?
V-ing form
can I not be meeting? can you not be meeting? can he not be meeting? can we not be meeting? can you not be meeting? can they not be meeting?
Perfect
can I not have met? can you not have met? can he not have met? can we not have met? can you not have met? can they not have met?
V-ing perfect
can I not have been meeting? can you not have been meeting? can he not have been meeting? can we not have been meeting? can you not have been meeting? can they not have been meeting?