C111112111133131121133133313331333133313331323132313331333133313231313221   >>    C11111211113313112113313331333133313331333132313231333133313331323131322   <<    C111112111133131121133133313331333133313331323132313331333133313231313223   >>      C111112111133131121133133313331333133313331323132313331333133313231313222   >>