C1111233131211111211113313331333133313331322322331312111133131122313112233121   >>    C111123313121111121111331333133313331333132232233131211113313112231311223312   <<    C1111233131211111211113313331333133313331322322331312111133131122313112233123   >>      C1111233131211111211113313331333133313331322322331312111133131122313112233122   >>