C111123313331323113313331333133313331323133113313331333132311233313321   >>    C11112331333132311331333133313331333132313311331333133313231123331332   <<    C111123313331323113313331333133313331323133113313331333132311233313323   >>      C111123313331323113313331333133313331323133113313331333132311233313322   >>