C111112111133131121133133313331323133313311211111133133313221221   >>    C11111211113313112113313331333132313331331121111113313331322122   <<    C111112111133131121133133313331323133313311211111133133313221223   >>      C111112111133131121133133313331323133313311211111133133313221222   >>