C312312111133113313231333133313331333133311211331333131133132222131   >>    C31231211113311331323133313331333133313331121133133313113313222213   <<    C312312111133113313231333133313331333133311211331333131133132222133   >>      C312312111133113313231333133313331333133311211331333131133132222132   >>