a-a aaa aad aaf aan aao aar aau ad- ada add adf adn ado adr adu af- afa afd aff afn afo afr afu an- ana and anf ann ano anr anu aoa aod aof aon aoo aor aou ar- ara ard arf arn aro arr aru au- aua aud auf aun auo aur daa dad daf dan dao dar dau dda ddd ddf ddn ddo ddr ddu dfa dfd dff dfn dfo dfr dfu dna dnd dnf dnn dno dnr doa dod dof don doo dor dou dra drd drn dro drr dru dua dud duf dun duo dur faa fad faf fan fao far fau fda fdd fdf fdn fdo fdr fdu ffa ffd fff ffn ffo ffr ffu fna fnd fnf fnn fnr fnu foa fof fon foo for fou fra frd frf frn fro frr fru fua fud fuf fun fuo fur fuu naa nad naf nan nao nar nau nda ndd ndf ndn ndo ndr ndu nfa nfd nff nfn nfo nfr nfu nna nnf nnn nno nnu no- noa nod nof non noo nor nou nra nrd nrf nrn nro nrr nru nua nud nun nuo nur nuu oaa oad oaf oan oao oar oau oda odd odf odn odo odr odu of- ofa ofd off ofn ofo ofr ofu on- ona ond onf onn ono onr onu oo- ooa ood oof oon ooo oor or- ora ord orf orn oro orr oru ou- oua oud ouf oun ouo our ra- raa rad raf ran rao rar rau rda rdd rdf rdn rdo rdr rdu rfa rfd rff rfn rfo rfr rfu rna rnd rnn rno rnr rnu roa rod rof ron roo ror rou rra rrd rrf rrn rrr rru rua rud ruf run ruo rur ruu ua- uaa uad uaf uan uao uar uau uda udd udf udn udo udr udu ufa ufd uff ufn ufo ufr ufu un- una und unf unn uno unr unu uoa uod uon uoo uor ur- ura urd urf urn uro urr uru uua uun uur uuu