a-a a-b aaa aab aad aah aan aao aas aau ab- aba abb abd abh abn abo abs abu ad- ada adb add adh adn ado ads adu aha ahb ahd ahh ahn aho ahs ahu an- ana anb and anh ann ano ans anu aoa aob aod aoh aon aoo aos aou as- asa asb asd ash asn aso ass asu au- aua aub aud auh aun auo aus b-u baa bab bad bah ban bao bas bau bba bbb bbd bbh bbn bbo bbs bbu bda bdb bdd bdh bdo bds bdu bha bhb bhd bhh bho bhs bhu bna bnb bnd bnn bno bns bnu boa bob bod boh bon boo bos bou bsa bsb bsd bsh bsn bso bss bsu bua bub bud buh bun buo bus buu daa dab dad dah dan dao das dau dba dbb dbd dbh dbn dbo dbs dbu dda ddb ddd ddh ddn ddo dds ddu dh- dha dhb dhd dhh dho dhs dhu dna dnb dnd dnh dnn dno dns doa dob dod doh don doo dos dou dsa dsb dsd dsh dsn dso dss dsu dua dub dud duh dun duo dus haa hab had hah han hao has hau hba hbb hbd hbh hbn hbo hbs hbu hda hdb hdd hdh hdn hdo hds hdu hha hhb hhd hhh hhn hho hhs hhu hna hnb hnd hnh hnn hno hns hnu hoa hob hod hoh hon hoo hos hou hsa hsb hsd hsh hsn hss hsu hua hub hud huh hun huo hus huu naa nab nad nah nan nao nas nau nba nbb nbd nbn nbo nbs nbu nda ndb ndd ndh ndn ndo nds ndu nha nhb nhd nhh nhn nhs nhu nna nnb nnh nnn nno nns nnu no- noa nob nod noh non noo nos nou nsa nsb nsd nsh nsn nso nss nsu nua nub nud nuh nun nuo nus nuu oaa oab oad oah oan oao oas oau ob- oba obb obd obh obn obo obs obu oda odb odd odh odn odo ods odu oha ohd ohh ohn oho ohs ohu on- ona onb ond onh onn ono ons onu oo- ooa oob ood ooh oon ooo oos os- osa osb osd osh osn oso oss osu ou- oua oud ouh oun ouo ous saa sab sad sah san sao sas sau sba sbb sbd sbh sbn sbo sbs sbu sda sdb sdd sdh sdn sdo sds sdu sh- sha shb shd shh shn sho shs shu sna snb snd snn sno sns snu soa sob sod soh son soo sos sou ss- ssa ssb ssd ssh ssn sso sss ssu sua sub sud suh sun suo sus suu ua- uaa uab uad uah uan uao uas uau uba ubb ubh ubn ubo ubs ubu uda udb udd udn udo uds udu uha uhb uhd uhh uho uhs uhu un- una unb und unh unn uno uns unu uoa uob uod uon uoo uos usa usb usd ush usn uso uss usu uua uun uus uuu