C111112111133131121133133313331323133313311211113313331333132322321   >>    C11111211113313112113313331333132313331331121111331333133313232232   <<    C111112111133131121133133313331323133313311211113313331333132322323   >>      C111112111133131121133133313331323133313311211113313331333132322322   >>