C111123313331323113313331323133313331311331311331333133322132313233313331211   >>    C11112331333132311331333132313331333131133131133133313332213231323331333121   <<    C111123313331323113313331323133313331311331311331333133322132313233313331213   >>      C111123313331323113313331323133313331311331311331333133322132313233313331212   >>