C111123313331323113313331333133313331323132311233132332313112121   >>    C11112331333132311331333133313331333132313231123313233231311212   <<    C111123313331323113313331333133313331323132311233132332313112123   >>      C111123313331323113313331333133313331323132311233132332313112122   >>