C1111233131211111211113313331333133313232321333133313331333211232322332311   >>    C111123313121111121111331333133313331323232133313331333133321123232233231   <<    C1111233131211111211113313331333133313232321333133313331333211232322332313   >>      C1111233131211111211113313331333133313232321333133313331333211232322332312   >>