a-a a-b aaa aab aad aam aan aao aas aau ab- aba abb abd abm abn abo abs abu ad- ada adb add adm adn ado ads adu ama amb amd amm amn amo ams amu an- ana anb and anm ann ano ans anu aoa aob aod aom aon aoo aos aou as- asa asb asd asm asn aso ass asu au- aua aub aud aum aun auo aus b-u baa bab bad bam ban bao bas bau bba bbb bbd bbm bbn bbo bbs bbu bda bdb bdd bdm bdo bds bdu bma bmb bmd bmm bmn bmo bms bmu bna bnb bnd bnn bno bns bnu boa bob bod bom bon boo bos bou bsa bsb bsd bsm bsn bso bss bsu bua bub bud bum bun buo bus buu daa dab dad dam dan dao das dau dba dbb dbd dbm dbn dbo dbs dbu dda ddb ddd ddm ddn ddo dds ddu dma dmb dmd dmm dmn dmo dms dmu dna dnb dnd dnm dnn dno dns doa dob dod dom don doo dos dou dsa dsb dsd dsm dsn dso dss dsu dua dub dud dum dun duo dus m-o maa mab mad mam man mao mas mau mba mbb mbd mbm mbo mbs mbu mda mdb mdd mdm mdn mdo mds mdu mma mmb mmd mmm mmn mmo mms mmu mna mnb mnm mnn mno mns mnu moa mob mod mom mon moo mos mou msa msb msd msm msn mso mss msu mua mub mud mum mun mus muu naa nab nad nam nan nao nas nau nba nbb nbd nbm nbn nbo nbs nbu nda ndb ndd ndm ndn ndo nds ndu nma nmb nmd nmm nmn nmo nms nmu nna nnb nnm nnn nno nns nnu no- noa nob nod nom non noo nos nou nsa nsb nsd nsm nsn nso nss nsu nua nub nud num nun nuo nus nuu oaa oab oad oam oan oao oas oau ob- oba obb obd obm obn obo obs obu oda odb odd odm odn odo ods odu om- oma omb omd omm omn omo oms omu on- ona onb ond onn ono ons onu oo- ooa oob ood oom oon ooo oos os- osa osb osd osm osn oso oss osu ou- oua oud oum oun ouo ous saa sab sad sam san sao sas sau sba sbb sbd sbm sbn sbo sbs sbu sda sdb sdd sdm sdn sdo sds sdu sma smb smd smm smn smo sms smu sna snb snd snm snn sno sns snu soa sob sod som son soo sos sou ss- ssa ssb ssd ssm ssn sso sss ssu sua sub sud sum sun suo sus suu ua- uaa uab uad uam uan uao uas uau uba ubb ubn ubo ubs ubu uda udb udd udm udn udo uds udu um- uma umb umd umm umn umo ums umu un- una unb und unm unn uno uns unu uoa uob uod uom uon uoo uos usa usb usd usm usn uso uss usu uua uum uun uus uuu