C111123313331323113313331333133313331323131211113313331311223323131   >>    C11112331333132311331333133313331333132313121111331333131122332313   <<    C111123313331323113313331333133313331323131211113313331311223323133   >>      C111123313331323113313331333133313331323131211113313331311223323132   >>