C1111233131211111211113313331333133313331333133313331323133313331121133121   >>    C111123313121111121111331333133313331333133313331333132313331333112113312   <<    C1111233131211111211113313331333133313331333133313331323133313331121133123   >>      C1111233131211111211113313331333133313331333133313331323133313331121133122   >>