-er a-a a-b a-c aaa aab aac aad aae aag aak aan aao aar aau ab- aba abb abc abd abe abg abk abn abo abr abu ac- aca acb acc acd ace acg ack acn aco acr acu ad- ada adb adc add ade adg adk adn ado adr adu aea aeb aec aed aee aeg aek aen aeo aer aeu ag- aga agb agc agd age agg agk agn ago agr agu aka akb akc akd ake akg akk akn ako akr aku an- ana anb anc and ane ang ank ann ano anr anu aoa aob aoc aod aoe aog aok aon aoo aor aou ar- ara arb arc ard are arg ark arn aro arr aru au- aua aub auc aud aue aug auk aun auo aur b-u baa bab bac bad bae bag bak ban bao bar bau bba bbb bbc bbd bbe bbg bbk bbn bbo bbr bbu bca bcb bcc bcd bce bcg bck bcn bco bcr bcu bda bdb bdc bdd bde bdg bdk bdo bdr bdu be- bea beb bec bed bee beg bek ben beo ber beu bga bgb bgc bgd bge bgg bgk bgn bgo bgr bgu bka bkb bkc bke bkg bkk bkn bko bkr bna bnb bnc bnd bne bng bnk bnn bno bnr bnu boa bob boc bod boe bog bok bon boo bor bou bra brb brd bre brg brk brn bro brr bru bua bub buc bud bue bug buk bun buo bur buu c-- caa cab cac cad cae cag cak can cao car cau cba cbb cbc cbd cbe cbg cbk cbn cbo cbr cbu cca ccb ccc ccd cce ccg cck ccn cco ccr ccu cda cdb cdc cdd cde cdg cdk cdn cdo cdr cdu ce- cea ceb cec ced cee ceg cek cen ceo cer ceu cga cgb cgc cgd cge cgg cgn cgo cgr cgu cka ckb ckc ckd cko cn- cna cnb cnc cnd cne cng cnn cno cnr cnu co- coa cob coc cod coe cog cok con coo cor cou cra crb crc crd cre crg crk crn cro crr cru cua cub cuc cud cue cug cuk cun cuo cur cuu daa dab dac dad dae dag dak dan dao dar dau dba dbb dbc dbd dbe dbg dbk dbn dbo dbr dbu dca dcb dcc dcd dce dcg dck dcn dco dcr dcu dda ddb ddc ddd dde ddg ddk ddn ddo ddr ddu de- dea deb dec ded dee deg dek den deo der deu dga dgc dgd dge dgg dgk dgn dgr dgu dka dkb dkc dke dkg dkk dko dkr dku dna dnb dnc dnd dne dng dnk dnn dno dnr doa dob doc dod doe dog dok don doo dor dou dra drb drc drd dre drg drk drn dro drr dru dua dub duc dud due dug duk dun duo dur eaa eab eac ead eae eag eak ean eao ear eau eba ebb ebc ebd ebe ebg ebk ebn ebo ebr ebu ec- eca ecb ecc ecd ece ecg eck ecn eco ecr ecu ed- eda edb edc edd ede edg edk edn edo edr edu eea eeb eec eed eee eeg eek een eeo eer ega egb egc egd ege egg egn ego egr egu eka ekb ekc ekd eke ekg eko ekr eku en- ena enb enc end ene eng enk enn eno enr enu eo- eoa eob eoc eod eoe eog eok eon eoo eor eou era erb erc erd ere erg erk ern ero err eru eu- eua eub euc eud eue eug eun eur g-d gaa gab gac gad gae gag gak gan gao gar gau gba gbc gbd gbe gbg gbk gbn gbo gbr gbu gca gcb gcc gcd gce gcg gck gcn gco gcr gcu gda gdb gdc gdd gde gdk gdn gdo gdr gdu ge- gea geb gec ged gee geg gek gen geo ger geu gga ggb ggc ggd ggg ggn ggo ggr ggu gka gkb gkd gkn gko gna gnb gnc gnd gne gnn gno gnr gnu goa gob goc god goe gog gok gon goo gor gou gra grb grc grd gre grg grk grn gro grr gru gu- gua gub guc gud gue gug guk gun guo gur guu ka- kaa kab kac kad kae kag kak kan kao kar kau kba kbb kbc kbd kbe kbk kbn kbo kbr kbu kca kcb kcc kcd kce kcg kck kcn kcr kcu kda kdb kdc kde kdg kdk kdo kdr kdu ke- kea keb kec ked kee keg kek ken keo ker kga kgb kgc kgd kgo kgu kkb kkc kke kkk kkn kkr kku kn- kna knc knd kne kng knk knn kno knr knu koa kob koc kod koe kog kok kon koo kor kou kra krc krd krg krk krn kro krr kru kub kuc kud kue kug kuk kun kur kuu naa nab nac nad nae nag nak nan nao nar nau nba nbb nbc nbd nbe nbg nbk nbn nbo nbr nbu nca ncb ncc ncd nce ncg nck ncn nco ncr ncu nda ndb ndc ndd nde ndg ndk ndn ndo ndr ndu ne- nea neb nec ned nee neg nek nen neo ner neu nga ngb ngc ngd nge ngg ngk ngn ngo ngu nka nkc nke nkk nkn nko nkr nku nna nnb nnc nne nng nnk nnn nno nnu no- noa nob noc nod noe nog nok non noo nor nou nra nrb nrc nrd nre nrg nrk nrn nro nrr nru nua nub nuc nud nue nug nuk nun nuo nur nuu oaa oab oac oad oae oag oak oan oao oar oau ob- oba obb obc obd obe obg obk obn obo obr obu oc- oca ocb occ ocd ocg ock ocn oco ocr ocu oda odb odc odd ode odg odn odo odr odu oea oeb oec oed oee oeg oen oeo oer oga ogc ogd oge ogg ogn ogo oka okb okc okd