C312312111111331312111133133313331333133322331323131133132322311   >>    C31231211111133131211113313331333133313332233132313113313232231   <<    C312312111111331312111133133313331333133322331323131133132322313   >>      C312312111111331312111133133313331333133322331323131133132322312   >>