C11112331333132311331333133313331333112211231211113313331322132313112232321   >>    C1111233133313231133133313331333133311221123121111331333132213231311223232   <<    C11112331333132311331333133313331333112211231211113313331322132313112232323   >>      C11112331333132311331333133313331333112211231211113313331322132313112232322   >>