I can market you can market she can market we can market you can market they can market
V-ing form
I can be marketing you can be marketing she can be marketing we can be marketing you can be marketing they can be marketing
Perfect
I can have marketed you can have marketed she can have marketed we can have marketed you can have marketed they can have marketed
V-ing perfect
I can have been marketing you can have been marketing she can have been marketing we can have been marketing you can have been marketing they can have been marketing
Negation
Simple form
I cannot market you cannot market she cannot market we cannot market you cannot market they cannot market
V-ing form
I cannot be marketing you cannot be marketing she cannot be marketing we cannot be marketing you cannot be marketing they cannot be marketing
Perfect
I cannot have marketed you cannot have marketed she cannot have marketed we cannot have marketed you cannot have marketed they cannot have marketed
V-ing perfect
I cannot have been marketing you cannot have been marketing she cannot have been marketing we cannot have been marketing you cannot have been marketing they cannot have been marketing
Interrogative form
Simple form
can I market? can you market? can she market? can we market? can you market? can they market?
V-ing form
can I be marketing? can you be marketing? can she be marketing? can we be marketing? can you be marketing? can they be marketing?
Perfect
can I have marketed? can you have marketed? can she have marketed? can we have marketed? can you have marketed? can they have marketed?
V-ing perfect
can I have been marketing? can you have been marketing? can she have been marketing? can we have been marketing? can you have been marketing? can they have been marketing?
Interro-negative form
Simple form
can I not market? can you not market? can she not market? can we not market? can you not market? can they not market?
V-ing form
can I not be marketing? can you not be marketing? can she not be marketing? can we not be marketing? can you not be marketing? can they not be marketing?
Perfect
can I not have marketed? can you not have marketed? can she not have marketed? can we not have marketed? can you not have marketed? can they not have marketed?
V-ing perfect
can I not have been marketing? can you not have been marketing? can she not have been marketing? can we not have been marketing? can you not have been marketing? can they not have been marketing?