a-a a-b aaa aab aak aam aan aao aas aau ab- aba abb abk abm abn abo abs abu aka akb akk akm akn ako aks aku ama amb amk amm amn amo ams amu an- ana anb ank anm ann ano ans anu aoa aob aok aom aon aoo aos aou as- asa asb ask asm asn aso ass asu au- aua aub auk aum aun auo aus b-u baa bab bak bam ban bao bas bau bba bbb bbk bbm bbn bbo bbs bbu bka bkb bkk bkm bkn bko bks bma bmb bmk bmm bmn bmo bms bmu bna bnb bnk bnn bno bns bnu boa bob bok bom bon boo bos bou bsa bsb bsk bsm bsn bso bss bsu bua bub buk bum bun buo bus buu ka- kaa kab kak kam kan kao kas kau kba kbb kbk kbm kbn kbo kbs kbu kkb kkk kkm kkn kks kku kma kmb kmk kmm kmo kms kmu kn- kna knk knm knn kno knu koa kob kok kom kon koo kos kou ksa ksb ksk ksm ksn kso kss ksu kub kuk kum kun kus kuu m-o maa mab mak mam man mao mas mau mba mbb mbk mbm mbo mbs mbu mka mkb mkk mkm mkn mko mks mku mma mmb mmk mmm mmn mmo mms mmu mna mnb mnk mnm mnn mno mns mnu moa mob mok mom mon moo mos mou msa msb msk msm msn mso mss msu mua mub muk mum mun mus muu naa nab nak nam nan nao nas nau nba nbb nbk nbm nbn nbo nbs nbu nka nkk nkm nkn nko nks nku nma nmb nmk nmm nmn nmo nms nmu nna nnb nnk nnm nnn nno nns nnu no- noa nob nok nom non noo nos nou nsa nsb nsk nsm nsn nso nss nsu nua nub nuk num nun nuo nus nuu oaa oab oak oam oan oao oas oau ob- oba obb obk obm obn obo obs obu oka okb okk oko oks oku om- oma omb omm omn omo oms omu on- ona onb onk onn ono ons onu oo- ooa oob ook oom oon ooo oos os- osa osb osk osm osn oso oss osu ou- oua ouk oum oun ouo ous saa sab sak sam san sao sas sau sba sbb sbk sbm sbn sbo sbs sbu sk- ska skb skk skm sko sks sku sma smb smk smm smn smo sms smu sna snb snk snm snn sno sns snu soa sob sok som son soo sos sou ss- ssa ssb ssk ssm ssn sso sss ssu sua sub suk sum sun suo sus suu ua- uaa uab uak uam uan uao uas uau uba ubb ubk ubn ubo ubs ubu uka ukb ukk ukn uku um- uma umb umm umn umo ums umu un- una unb unk unm unn uno uns unu uoa uob uok uom uon uoo uos usa usb usk usm usn uso uss usu uua uum uun uus uuu