C1111233131211111211113313331333133313232321333133313331333133112111111311231   >>    C111123313121111121111331333133313331323232133313331333133313311211111131123   <<    C1111233131211111211113313331333133313232321333133313331333133112111111311233   >>      C1111233131211111211113313331333133313232321333133313331333133112111111311232   >>