C1111233131211111211113313231333133313331323331333133313222321123221   >>    C111123313121111121111331323133313331333132333133313331322232112322   <<    C1111233131211111211113313231333133313331323331333133313222321123223   >>      C1111233131211111211113313231333133313331323331333133313222321123222   >>