C1111233131211111211113313331333133313331322322331323131133132233311   >>    C111123313121111121111331333133313331333132232233132313113313223331   <<    C1111233131211111211113313331333133313331322322331323131133132233313   >>      C1111233131211111211113313331333133313331322322331323131133132233312   >>