a-a a-b a-i aaa aab aad aai aan aao aar aas aau ab- aba abb abd abi abn abo abr abs abu ad- ada adb add adi adn ado adr ads adu ai- aia aib aid aii ain aio air ais aiu an- ana anb and ani ann ano anr ans anu aoa aob aod aoi aon aoo aor aos aou ar- ara arb ard ari arn aro arr ars aru as- asa asb asd asi asn aso asr ass asu au- aua aub aud aui aun auo aur aus b-u baa bab bad bai ban bao bar bas bau bba bbb bbd bbi bbn bbo bbr bbs bbu bda bdb bdd bdi bdo bdr bds bdu bi- bia bib bid bii bin bio bir bis biu bna bnb bnd bni bnn bno bnr bns bnu boa bob bod boi bon boo bor bos bou bra brb brd bri brn bro brr brs bru bsa bsb bsd bsi bsn bso bsr bss bsu bua bub bud bui bun buo bur bus buu daa dab dad dai dan dao dar das dau dba dbb dbd dbi dbn dbo dbr dbs dbu dda ddb ddd ddi ddn ddo ddr dds ddu di- dia dib did dii din dio dir dis diu dna dnb dnd dni dnn dno dnr dns doa dob dod doi don doo dor dos dou dra drb drd dri drn dro drr drs dru dsa dsb dsd dsi dsn dso dsr dss dsu dua dub dud dui dun duo dur dus i-d ia- iaa iab iad iai ian iao iar ias iau iba ibb ibd ibi ibn ibo ibr ibs ibu ida idb idd idi idn ido idr ids idu iia iib iid iii iin iio iir iis iiu in- ina inb ind ini inn ino inr ins inu io- ioa iob iod ioi ion ioo ior ios iou ir- ira irb ird iri irn iro irr irs iru is- isa isb isd isi isn iso isr iss isu iu- iua iub iud iui iur ius n-i naa nab nad nai nan nao nar nas nau nba nbb nbd nbi nbn nbo nbr nbs nbu nda ndb ndd ndi ndn ndo ndr nds ndu nia nib nid nii nin nio nir nis niu nna nnb nni nnn nno nns nnu no- noa nob nod noi non noo nor nos nou nra nrb nrd nri nrn nro nrr nrs nru nsa nsb nsd nsi nsn nso nsr nss nsu nua nub nud nui nun nuo nur nus nuu o-i oaa oab oad oai oan oao oar oas oau ob- oba obb obd obi obn obo obr obs obu oda odb odd odi odn odo odr ods odu oia oib oid oii oin oio oir ois oiu on- ona onb ond oni onn ono onr ons onu oo- ooa oob ood ooi oon ooo oor oos or- ora orb ord ori orn oro orr ors oru os- osa osb osd osi osn oso osr oss osu ou- oua oud oui oun ouo our ous ra- raa rab rad rai ran rao rar ras rau rba rbb rbd rbi rbn rbo rbr rbs rbu rda rdb rdd rdi rdn rdo rdr rds rdu ria rib rid rii rin rio rir ris rna rnb rnd rni rnn rno rnr rns rnu roa rob rod roi ron roo ror ros rou rra rrb rrd rri rrn rrr rrs rru rsa rsb rsd rsi rsn rso rsr rss rsu rua rub rud rui run ruo rur rus ruu saa sab sad sai san sao sar sas sau sba sbb sbd sbi sbn sbo sbr sbs sbu sda sdb sdd sdi sdn sdo sdr sds sdu sia sib sid sii sin sio sir sis siu sna snb snd sni snn sno snr sns snu soa sob sod soi son soo sor sos sou sr- sra srb srd sri srn sro srr srs ss- ssa ssb ssd ssi ssn sso ssr sss ssu sua sub sud sui sun suo sur sus suu ua- uaa uab uad uai uan uao uar uas uau uba ubb ubi ubn ubo ubr ubs ubu uda udb udd udi udn udo udr uds udu uia uib uid uii uin uio uir uis uiu un- una unb und uni unn uno unr uns unu uoa uob uod uon uoo uor uos ur- ura urb urd uri urn uro urr urs uru usa usb usd usi usn uso usr uss usu uua uun uur uus uuu