C111112111133131121133133313331323133313221211111333133313223313331311213121   >>    C11111211113313112113313331333132313331322121111133313331322331333131121312   <<    C111112111133131121133133313331323133313221211111333133313223313331311213123   >>      C111112111133131121133133313331323133313221211111333133313223313331311213122   >>