a-a a-b a-c aaa aab aac aad aam aan aao aas aau ab- aba abb abc abd abm abn abo abs abu ac- aca acb acc acd acm acn aco acs acu ad- ada adb adc add adm adn ado ads adu ama amb amc amd amm amn amo ams amu an- ana anb anc and anm ann ano ans anu aoa aob aoc aod aom aon aoo aos aou as- asa asb asc asd asm asn aso ass asu au- aua aub auc aud aum aun auo aus b-u baa bab bac bad bam ban bao bas bau bba bbb bbc bbd bbm bbn bbo bbs bbu bca bcb bcc bcd bcm bcn bco bcs bcu bda bdb bdc bdd bdm bdo bds bdu bma bmb bmc bmd bmm bmn bmo bms bmu bna bnb bnc bnd bnn bno bns bnu boa bob boc bod bom bon boo bos bou bsa bsb bsc bsd bsm bsn bso bss bsu bua bub buc bud bum bun buo bus buu c-- caa cab cac cad cam can cao cas cau cba cbb cbc cbd cbm cbn cbo cbs cbu cca ccb ccc ccd ccm ccn cco ccs ccu cda cdb cdc cdd cdm cdn cdo cds cdu cma cmb cmc cmd cmm cmn cmo cms cmu cn- cna cnb cnc cnd cnm cnn cno cns cnu co- coa cob coc cod com con coo cos cou csa csb csc csd csm csn cso css csu cua cub cuc cud cum cun cuo cus cuu daa dab dac dad dam dan dao das dau dba dbb dbc dbd dbm dbn dbo dbs dbu dca dcb dcc dcd dcm dcn dco dcs dcu dda ddb ddc ddd ddm ddn ddo dds ddu dma dmb dmc dmd dmm dmn dmo dms dmu dna dnb dnc dnd dnm dnn dno dns doa dob doc dod dom don doo dos dou dsa dsb dsc dsd dsm dsn dso dss dsu dua dub duc dud dum dun duo dus m-o maa mab mac mad mam man mao mas mau mba mbb mbc mbd mbm mbo mbs mbu mc- mca mcb mcc mcd mcm mcn mco mcs mcu mda mdb mdc mdd mdm mdn mdo mds mdu mma mmb mmc mmd mmm mmn mmo mms mmu mna mnb mnc mnm mnn mno mns mnu moa mob moc mod mom mon moo mos mou msa msb msc msd msm msn mso mss msu mua mub muc mud mum mun mus muu naa nab nac nad nam nan nao nas nau nba nbb nbc nbd nbm nbn nbo nbs nbu nca ncb ncc ncd ncm ncn nco ncs ncu nda ndb ndc ndd ndm ndn ndo nds ndu nma nmb nmc nmd nmm nmn nmo nms nmu nna nnb nnc nnm nnn nno nns nnu no- noa nob noc nod nom non noo nos nou nsa nsb nsc nsd nsm nsn nso nss nsu nua nub nuc nud num nun nuo nus nuu oaa oab oac oad oam oan oao oas oau ob- oba obb obc obd obm obn obo obs obu oc- oca ocb occ ocd ocm ocn oco ocs ocu oda odb odc odd odm odn odo ods odu om- oma omb omc omd omm omn omo oms omu on- ona onb onc ond onn ono ons onu oo- ooa oob ooc ood oom oon ooo oos os- osa osb osc osd osm osn oso oss osu ou- oua ouc oud oum oun ouo ous saa sab sac sad sam san sao sas sau sba sbb sbc sbd sbm sbn sbo sbs sbu sca scb scc scd scm scn sco scs scu sda sdb sdc sdd sdm sdn sdo sds sdu sma smb smc smd smm smn smo sms smu sna snb snc snd snm snn sno sns snu soa sob soc sod som son soo sos sou ss- ssa ssb ssc ssd ssm ssn sso sss ssu sua sub suc sud sum sun suo sus suu ua- uaa uab uac uad uam uan uao uas uau uba ubb ubc ubn ubo ubs ubu uca ucb ucc ucd ucm ucn uco ucs ucu uda udb udc udd udm udn udo uds udu um- uma umb umc umd umm umn umo ums umu un- una unb unc und unm unn uno uns unu uoa uob uoc uod uom uon uoo uos usa usb usc usd usm usn uso uss usu uua uuc uum uun uus uuu