C111123313331323113313331323133313331311331311331333132213233111   >>    C11112331333132311331333132313331333131133131133133313221323311   <<    C111123313331323113313331323133313331311331311331333132213233113   >>      C111123313331323113313331323133313331311331311331333132213233112   >>