a-a a-b aaa aab aad aae aaf aam aan aao aau ab- aba abb abd abe abf abm abn abo abu ad- ada adb add ade adf adm adn ado adu aea aeb aed aee aef aem aen aeo aeu af- afa afb afd afe aff afm afn afo afu ama amb amd ame amf amm amn amo amu an- ana anb and ane anf anm ann ano anu aoa aob aod aoe aof aom aon aoo aou au- aua aub aud aue auf aum aun auo b-u baa bab bad bae baf bam ban bao bau bba bbb bbd bbe bbf bbm bbn bbo bbu bda bdb bdd bde bdf bdm bdo bdu be- bea beb bed bee bef bem ben beo beu bfa bfb bfd bfe bff bfm bfn bfo bfu bma bmb bmd bme bmf bmm bmn bmo bmu bna bnb bnd bne bnf bnn bno bnu boa bob bod boe bof bom bon boo bou bua bub bud bue buf bum bun buo buu daa dab dad dae daf dam dan dao dau dba dbb dbd dbe dbf dbm dbn dbo dbu dda ddb ddd dde ddf ddm ddn ddo ddu de- dea deb ded dee def dem den deo deu dfa dfb dfd dfe dff dfm dfn dfo dfu dma dmb dmd dme dmf dmm dmn dmo dmu dna dnb dnd dne dnf dnm dnn dno doa dob dod doe dof dom don doo dou dua dub dud due duf dum dun duo eaa eab ead eae eaf eam ean eao eau eba ebb ebd ebe ebf ebm ebn ebo ebu ed- eda edb edd ede edf edm edn edo edu eea eeb eed eee eef eem een eeo ef- efa efb efd efe eff efm efo em- ema emb emd eme emf emm emn emo emu en- ena enb end ene enf enm enn eno enu eo- eoa eob eod eoe eof eom eon eoo eou eu- eua eub eud eue euf eun faa fab fad fae faf fam fan fao fau fba fbb fbd fbe fbf fbm fbn fbo fbu fda fdb fdd fde fdf fdm fdn fdo fdu fea feb fed fee fef fem fen feo feu ffa ffd ffe fff ffm ffn ffo ffu fma fmb fmd fme fmf fmm fmn fmo fmu fna fnb fnd fne fnf fnm fnn fnu foa fob foe fof fom fon foo fou fua fub fud fue fuf fum fun fuo fuu m-f m-o maa mab mad mae maf mam man mao mau mba mbb mbd mbe mbf mbm mbo mbu mda mdb mdd mde mdf mdm mdn mdo mdu mea meb med mee mef mem men meo meu mfa mfb mfd mfe mff mfm mfn mfo mfu mma mmb mmd mme mmf mmm mmn mmo mmu mna mnb mne mnf mnm mnn mno mnu moa mob mod moe mof mom mon moo mou mua mub mud mue muf mum mun muu naa nab nad nae naf nam nan nao nau nba nbb nbd nbe nbf nbm nbn nbo nbu nda ndb ndd nde ndf ndm ndn ndo ndu ne- nea neb ned nee nef nem nen neo neu nfa nfb nfd nfe nff nfn nfo nfu nma nmb nmd nme nmm nmn nmo nmu nna nnb nne nnf nnm nnn nno nnu no- noa nob nod noe nof nom non noo nou nua nub nud nue num nun nuo nuu oaa oab oad oae oaf oam oan oao oau ob- oba obb obd obe obf obm obn obo obu oda odb odd ode odf odm odn odo odu oea oeb oed oee oef oem oen oeo of- ofa ofb ofd ofe off ofm ofn ofo ofu om- oma omb omd ome omf omm omn omo omu on- ona onb ond one onf onn ono onu oo- ooa oob ood oof oom oon ooo ou- oua oud oue ouf oum oun ouo ua- uaa uab uad uae uaf uam uan uao uau uba ubb ube ubf ubn ubo ubu uda udb udd ude udf udm udn udo udu uea ueb ued uee uef uem uen ufa ufd ufe uff ufm ufn ufo ufu um- uma umb umd ume umf umm umn umo umu un- una unb und une unf unm unn uno unu uoa uob uod uoe uom uon uoo uua uue uum uun uuu