C1111233131211111211113313331333133313331333133313331333133313331322221333131   >>    C111123313121111121111331333133313331333133313331333133313331333132222133313   <<    C1111233131211111211113313331333133313331333133313331333133313331322221333133   >>      C1111233131211111211113313331333133313331333133313331333133313331322221333132   >>