a-a a-b aaa aab aad aae aak aan aas aau ab- aba abb abd abe abk abn abs abu ad- ada adb add ade adk adn ads adu aea aeb aed aee aek aen aes aeu aka akb akd ake akk akn aks aku an- ana anb and ane ank ann ans anu as- asa asb asd ase ask asn ass asu au- aua aub aud aue auk aun aus b-u baa bab bad bae bak ban bas bau bba bbb bbd bbe bbk bbn bbs bbu bda bdb bdd bde bdk bds bdu be- bea beb bed bee bek ben bes beu bka bkb bke bkk bkn bks bna bnb bnd bne bnk bnn bns bnu bsa bsb bsd bse bsk bsn bss bsu bua bub bud bue buk bun bus buu daa dab dad dae dak dan das dau dba dbb dbd dbe dbk dbn dbs dbu dda ddb ddd dde ddk ddn dds ddu de- dea deb ded dee dek den des deu dka dkb dke dkk dks dku dna dnb dnd dne dnk dnn dns dsa dsb dsd dse dsk dsn dss dsu dua dub dud due duk dun dus eaa eab ead eae eak ean eas eau eba ebb ebd ebe ebk ebn ebs ebu ed- eda edb edd ede edk edn eds edu eea eeb eed eee eek een ees eka ekb ekd eke eks eku en- ena enb end ene enk enn ens enu es- esa esb esd ese esk esn ess esu eu- eua eub eud eue eun eus ka- kaa kab kad kae kak kan kas kau kba kbb kbd kbe kbk kbn kbs kbu kda kdb kde kdk kds kdu ke- kea keb ked kee kek ken kes kkb kke kkk kkn kks kku kn- kna knd kne knk knn knu ksa ksb ksd kse ksk ksn kss ksu kub kud kue kuk kun kus kuu naa nab nad nae nak nan nas nau nba nbb nbd nbe nbk nbn nbs nbu nda ndb ndd nde ndk ndn nds ndu ne- nea neb ned nee nek nen nes neu nka nke nkk nkn nks nku nna nnb nne nnk nnn nns nnu nsa nsb nsd nse nsk nsn nss nsu nua nub nud nue nuk nun nus nuu saa sab sad sae sak san sas sau sba sbb sbd sbe sbk sbn sbs sbu sda sdb sdd sde sdk sdn sds sdu se- sea seb sed see sek sen ses seu sk- ska skb skd ske skk sks sku sna snb snd sne snk snn sns snu ss- ssa ssb ssd sse ssk ssn sss ssu sua sub sud sue suk sun sus suu ua- uaa uab uad uae uak uan uas uau uba ubb ube ubk ubn ubs ubu uda udb udd ude udk udn uds udu uea ueb ued uee uen ues uka ukb uke ukk ukn uku un- una unb und une unk unn uns unu usa usb usd use usk usn uss usu uua uue uun uus uuu