C1111233131211111211113313331333133313331333133313331333133313112223313222311   >>    C111123313121111121111331333133313331333133313331333133313331311222331322231   <<    C1111233131211111211113313331333133313331333133313331333133313112223313222313   >>      C1111233131211111211113313331333133313331333133313331333133313112223313222312   >>