ddd ddf ddn ddo ddr ddu dfd dff dfn dfo dfr dfu dnd dnf dnn dno dnr dod dof don doo dor dou drd drn dro drr dru dud duf dun duo dur fdd fdf fdn fdo fdr fdu ffd fff ffn ffo ffr ffu fnd fnf fnn fnr fnu fof fon foo for fou frd frf frn fro frr fru fud fuf fun fuo fur fuu ndd ndf ndn ndo ndr ndu nfd nff nfn nfo nfr nfu nnf nnn nno nnu no- nod nof non noo nor nou nrd nrf nrn nro nrr nru nud nun nuo nur nuu odd odf odn odo odr odu of- ofd off ofn ofo ofr ofu on- ond onf onn ono onr onu oo- ood oof oon ooo oor or- ord orf orn oro orr oru ou- oud ouf oun ouo our rdd rdf rdn rdo rdr rdu rfd rff rfn rfo rfr rfu rnd rnn rno rnr rnu rod rof ron roo ror rou rrd rrf rrn rrr rru rud ruf run ruo rur ruu udd udf udn udo udr udu ufd uff ufn ufo ufr ufu un- und unf unn uno unr unu uod uon uoo uor ur- urd urf urn uro urr uru uun uur uuu