C111112111133131121133133313331333133313331323132313331333133313232213112131   >>    C11111211113313112113313331333133313331333132313231333133313331323221311213   <<    C111112111133131121133133313331333133313331323132313331333133313232213112133   >>      C111112111133131121133133313331333133313331323132313331333133313232213112132   >>