a-a aaa aad aan aao aar aau ad- ada add adn ado adr adu an- ana and ann ano anr anu aoa aod aon aoo aor aou ar- ara ard arn aro arr aru au- aua aud aun auo aur daa dad dan dao dar dau dda ddd ddn ddo ddr ddu dna dnd dnn dno dnr doa dod don doo dor dou dra drd drn dro drr dru dua dud dun duo dur naa nad nan nao nar nau nda ndd ndn ndo ndr ndu nna nnn nno nnu no- noa nod non noo nor nou nra nrd nrn nro nrr nru nua nud nun nuo nur nuu oaa oad oan oao oar oau oda odd odn odo odr odu on- ona ond onn ono onr onu oo- ooa ood oon ooo oor or- ora ord orn oro orr oru ou- oua oud oun ouo our ra- raa rad ran rao rar rau rda rdd rdn rdo rdr rdu rna rnd rnn rno rnr rnu roa rod ron roo ror rou rra rrd rrn rrr rru rua rud run ruo rur ruu ua- uaa uad uan uao uar uau uda udd udn udo udr udu un- una und unn uno unr unu uoa uod uon uoo uor ur- ura urd urn uro urr uru uua uun uur uuu