C111112111133131121133133313331323133313221211111333133313331333112323112121   >>    C11111211113313112113313331333132313331322121111133313331333133311232311212   <<    C111112111133131121133133313331323133313221211111333133313331333112323112123   >>      C111112111133131121133133313331323133313221211111333133313331333112323112122   >>