a-a a-b a-i aaa aab aae aai aak aao aas aau ab- aba abb abe abi abk abo abs abu aea aeb aee aei aek aeo aes aeu ai- aia aib aie aii aik aio ais aiu aka akb ake aki akk ako aks aku aoa aob aoe aoi aok aoo aos aou as- asa asb ase asi ask aso ass asu au- aua aub aue aui auk auo aus b-u baa bab bae bai bak bao bas bau bba bbb bbe bbi bbk bbo bbs bbu be- bea beb bee bei bek beo bes beu bi- bia bib bie bii bik bio bis biu bka bkb bke bkk bko bks boa bob boe boi bok boo bos bou bsa bsb bse bsi bsk bso bss bsu bua bub bue bui buk buo bus buu eaa eab eae eai eak eao eas eau eba ebb ebe ebi ebk ebo ebs ebu eea eeb eee eek eeo ees eia eib eie eii eik eio eis eiu eka ekb eke eki eko eks eku eo- eoa eob eoe eoi eok eoo eos eou es- esa esb ese esi esk eso ess esu eu- eua eub eue eui eus ia- iaa iab iae iai iao ias iau iba ibb ibe ibi ibk ibo ibs ibu ie- iea iee iei iek ies iia iib iie iii iio iis iiu ika ikb ike iki ikk iko iks iku io- ioa iob ioe ioi ioo ios iou is- isa isb ise isi isk iso iss isu iu- iua iub iue iui ius ka- kaa kab kae kai kak kao kas kau kba kbb kbe kbi kbk kbo kbs kbu ke- kea keb kee kei kek keo kes kia kib kie kii kik kio kis kiu kkb kke kki kkk kks kku koa kob koe koi kok koo kos kou ksa ksb kse ksi ksk kso kss ksu kub kue kui kuk kus kuu o-i oaa oab oae oai oak oao oas oau ob- oba obb obe obi obk obo obs obu oea oeb oee oei oeo oes oia oib oie oii oik oio ois oiu oka okb oke oki okk oko oks oku oo- ooa oob ooi ook ooo oos os- osa osb ose osi osk oso oss osu ou- oua oue oui ouk ouo ous saa sab sae sai sak sao sas sau sba sbb sbe sbi sbk sbo sbs sbu se- sea seb see sei sek seo ses seu sia sib sie sii sik sio sis siu sk- ska skb ske ski skk sko sks sku soa sob soe soi sok soo sos sou ss- ssa ssb sse ssi ssk sso sss ssu sua sub sue sui suk suo sus suu ua- uaa uab uae uai uak uao uas uau uba ubb ube ubi ubk ubo ubs ubu uea ueb uee uei ues uia uib uie uii uio uis uiu uka ukb uke uki ukk uku uoa uob uoe uok uoo uos usa usb use usi usk uso uss usu uua uue uus uuu