D1212132333131313331323331312111133132322132313331323223313232223231   >>    D121213233313131333132333131211113313232213231333132322331323222323   <<    D1212132333131313331323331312111133132322132313331323223313232223233   >>      D1212132333131313331323331312111133132322132313331323223313232223232   >>