C1111233131211111211113313331333133313331322322331323211232313232311   >>    C111123313121111121111331333133313331333132232233132321123231323231   <<    C1111233131211111211113313331333133313331322322331323211232313232313   >>      C1111233131211111211113313331333133313331322322331323211232313232312   >>