C111112111133131121133133313331323133313221131211113313232213112121   >>    C11111211113313112113313331333132313331322113121111331323221311212   <<    C111112111133131121133133313331323133313221131211113313232213112123   >>      C111112111133131121133133313331323133313221131211113313232213112122   >>