C312312111133113313231333133313331333133313331333131133132323321   >>    C31231211113311331323133313331333133313331333133313113313232332   <<    C312312111133113313231333133313331333133313331333131133132323323   >>      C312312111133113313231333133313331333133313331333131133132323322   >>