<< 70007001‍7002‍7003‍7004‍7005‍7006‍7007‍7008‍7009‍>>

<< 70007010‍7020‍7030‍7040‍7050‍7060‍7070‍7080‍7090‍>>

<< 70007100‍7200‍7300‍7400‍7500‍7600‍7700‍7800‍7900‍>>

<< 0100020003000400050006000700080009000>>

7000是介于6999与7001之间的自然数。