C312312111112111113121333133313331333133313331333211232313233313231323221111   >>    C31231211111211111312133313331333133313331333133321123231323331323132322111   <<    C312312111112111113121333133313331333133313331333211232313233313231323221113   >>      C312312111112111113121333133313331333133313331333211232313233313231323221112   >>