C312312111112111113121333133313331333133313331333211232313233313331322132322221   >>    C31231211111211111312133313331333133313331333133321123231323331333132213232222   <<    C312312111112111113121333133313331333133313331333211232313233313331322132322223   >>      C312312111112111113121333133313331333133313331333211232313233313331322132322222   >>