I can quote you can quote she can quote we can quote you can quote they can quote
V-ing form
I can be quoting you can be quoting she can be quoting we can be quoting you can be quoting they can be quoting
Perfect
I can have quoted you can have quoted she can have quoted we can have quoted you can have quoted they can have quoted
V-ing perfect
I can have been quoting you can have been quoting she can have been quoting we can have been quoting you can have been quoting they can have been quoting
Negation
Simple form
I cannot quote you cannot quote she cannot quote we cannot quote you cannot quote they cannot quote
V-ing form
I cannot be quoting you cannot be quoting she cannot be quoting we cannot be quoting you cannot be quoting they cannot be quoting
Perfect
I cannot have quoted you cannot have quoted she cannot have quoted we cannot have quoted you cannot have quoted they cannot have quoted
V-ing perfect
I cannot have been quoting you cannot have been quoting she cannot have been quoting we cannot have been quoting you cannot have been quoting they cannot have been quoting
Interrogative form
Simple form
can I quote? can you quote? can she quote? can we quote? can you quote? can they quote?
V-ing form
can I be quoting? can you be quoting? can she be quoting? can we be quoting? can you be quoting? can they be quoting?
Perfect
can I have quoted? can you have quoted? can she have quoted? can we have quoted? can you have quoted? can they have quoted?
V-ing perfect
can I have been quoting? can you have been quoting? can she have been quoting? can we have been quoting? can you have been quoting? can they have been quoting?
Interro-negative form
Simple form
can I not quote? can you not quote? can she not quote? can we not quote? can you not quote? can they not quote?
V-ing form
can I not be quoting? can you not be quoting? can she not be quoting? can we not be quoting? can you not be quoting? can they not be quoting?
Perfect
can I not have quoted? can you not have quoted? can she not have quoted? can we not have quoted? can you not have quoted? can they not have quoted?
V-ing perfect
can I not have been quoting? can you not have been quoting? can she not have been quoting? can we not have been quoting? can you not have been quoting? can they not have been quoting?