C312312111133113313231333133313331333133313221312213331313233311   >>    C31231211113311331323133313331333133313331322131221333131323331   <<    C312312111133113313231333133313331333133313221312213331313233313   >>      C312312111133113313231333133313331333133313221312213331313233312   >>