C11111333133313232233133313331333133313331233132313331322311331333131323131121   >>    C1111133313331323223313331333133313331333123313231333132231133133313132313112   <<    C11111333133313232233133313331333133313331233132313331322311331333131323131123   >>      C11111333133313232233133313331333133313331233132313331322311331333131323131122   >>