-er a-a a-b a-c aaa aab aac aae aaf aag aah aaj aan aar aau ab- aba abb abc abe abf abg abh abj abn abr abu ac- aca acb acc ace acf acg ach acj acn acr acu aea aeb aec aee aef aeg aeh aej aen aer aeu af- afa afb afc afe aff afg afh afj afn afr afu ag- aga agb agc age agf agg agh agj agn agr agu aha ahb ahc ahe ahf ahg ahh ahj ahn ahr ahu aja ajb ajc aje ajf ajh ajj ajn ajr aju an- ana anb anc ane anf ang anh anj ann anr anu ar- ara arb arc are arf arg arh arj arn arr aru au- aua aub auc aue auf aug auh auj aun aur b-u baa bab bac bae baf bag bah baj ban bar bau bba bbb bbc bbe bbf bbg bbh bbn bbr bbu bca bcb bcc bce bcf bcg bch bcj bcn bcr bcu be- bea beb bec bee bef beg beh ben ber beu bfa bfb bfc bfe bff bfg bfh bfj bfn bfr bfu bga bgb bgc bge bgf bgg bgh bgn bgr bgu bha bhb bhc bhe bhf bhg bhh bhj bhr bhu bja bjc bjf bjg bjj bjn bjr bju bna bnb bnc bne bnf bng bnj bnn bnr bnu bra brb bre brf brg brh brj brn brr bru bua bub buc bue buf bug buh buj bun bur buu c-- c-j caa cab cac cae caf cag cah caj can car cau cba cbb cbc cbe cbf cbg cbh cbj cbn cbr cbu cca ccb ccc cce ccf ccg cch ccj ccn ccr ccu ce- cea ceb cec cee cef ceg ceh cej cen cer ceu cfa cfb cfc cfe cff cfg cfh cfn cfr cfu cga cgb cgc cge cgg cgh cgn cgr cgu ch- cha chb chc che chf chg chh chn chr chu cja cjb cjc cjf cjg cjr cn- cna cnb cnc cne cnf cng cnh cnj cnn cnr cnu cra crb crc cre crf crg crh crj crn crr cru cua cub cuc cue cuf cug cuh cun cur cuu eaa eab eac eae eaf eag eah eaj ean ear eau eba ebb ebc ebe ebf ebg ebh ebj ebn ebr ebu ec- eca ecb ecc ece ecf ecg ech ecj ecn ecr ecu eea eeb eec eee eef eeg een eer ef- efa efb efc efe eff efg efh efr ega egb egc ege egf egg egh egn egr egu eha ehb ehc ehe ehf ehg ehh ehn ehr ehu eja ejc ejf eju en- ena enb enc ene enf eng enh enn enr enu era erb erc ere erf erg erh ern err eru eu- eua eub euc eue euf eug euj eun eur faa fab fac fae faf fag fah faj fan far fau fba fbb fbc fbe fbf fbg fbh fbn fbr fbu fca fcb fcc fce fcf fcg fcj fcn fcr fcu fea feb fec fee fef feg feh fen fer feu ffa ffc ffe fff ffg ffh ffn ffr ffu fga fgb fgc fge fgf fgg fgh fgn fgr fha fhb fhc fhe fhf fhg fhh fhj fhn fhr fja fjb fjc fjg fna fnb fnc fne fnf fng fnh fnj fnn fnr fnu fra frb frc fre frf frg frh frj frn frr fru fua fub fue fuf fug fun fur fuu gaa gab gac gae gaf gag gah gaj gan gar gau gba gbc gbe gbf gbg gbh gbj gbn gbr gbu gca gcb gcc gce gcf gcg gch gcn gcr gcu ge- gea geb gec gee gef geg geh gen ger geu gfa gfb gfc gfe gff gfh gfr gga ggb ggc ggg ggh ggj ggn ggr ggu gha ghb ghc ghe ghg ghh ghj ghn ghr gja gjc gje gjg gjr gna gnb gnc gne gnf gnn gnr gnu gra grb grc gre grf grg grh grj grn grr gru gu- gua gub guc gue guf gug guj gun gur guu haa hab hac hae haf hag hah haj han har hau hba hbb hbc hbe hbf hbg hbh hbj hbn hbr hbu hca hcb hcc hce hcf hcg hch hcj hcn hcr he- hea heb hec hee hef heg heh hej hen her heu hfa hfb hfc hfe hff hfg hfh hfn hfr hfu hga hgb hgc hge hgf hgg hgh hgn hgr hgu hha hhb hhc hhe hhf hhg hhh hhj hhn hhr hhu hja hjn hjr hna hnb hnc hne hnf hng hnh hnj hnn hnu hr- hra hrb hrc hre hrf hrg hrh hrj hrn hrr hru hua hub huc hue huf hug huh huj hun hur huu jaa jab jac jae jaf jag jah jaj jan jar jau jba jbc jbf jbg jbj jbr jbu jca jcb jcc jce jcf jch jcr jcu jea jeb jec jee jef jeg jeh jej jen jer jeu jfa jfb jfc jfe jff jfg jfh jfj jfr jga jgb jge jgh jgn jgr jgu jha jhc jhe jhf jhj jhn jhr jhu jja jjb jjc jjf jjg jjj jjr jju jna jnc jne jnf jng jnh jnj jnn jnr jnu jra jrb jrc jrf jrg jrn jrr jub jue juf jug juh jun jur naa nab nac nae naf nag nah naj nan nar nau nba nbb nbc nbe nbf nbg nbn nbr nbu nca ncb ncc nce ncf ncg nch ncn ncr ncu ne- nea neb nec nee nef neg neh nej nen ner neu nfa nfb nfc nfe nff nfn nfr nfu nga ngb ngc nge ngf ngg ngh ngj ngn ngu nha nhb nhc nhe nhf nhg nhh nhj nhn nhr nhu nja njc nje njf njn nju nna nnb nnc nne nnf nng nnh nnn nnu nra nrb nrc nre nrf nrg nrj nrn nrr nru nua nub nuc nue nug nuh nuj nun nur nuu ra- raa rab rac rae raf rag rah raj ran rar rau rba rbb rbc rbe rbf rbg rbh