C1111233131211111211113313331333133313331311211331333133313331323331323233131   >>    C111123313121111121111331333133313331333131121133133313331333132333132323313   <<    C1111233131211111211113313331333133313331311211331333133313331323331323233133   >>      C1111233131211111211113313331333133313331311211331333133313331323331323233132   >>