-er a-a a-b a-c aaa aab aac aad aae aaf aag aah aao aar aau ab- aba abb abc abd abe abf abg abh abo abr abu ac- aca acb acc acd ace acf acg ach aco acr acu ad- ada adb adc add ade adf adg adh ado adr adu aea aeb aec aed aee aef aeg aeh aeo aer aeu af- afa afb afc afd afe aff afg afh afo afr afu ag- aga agb agc agd age agf agg agh ago agr agu aha ahb ahc ahd ahe ahf ahg ahh aho ahr ahu aoa aob aoc aod aoe aof aog aoh aoo aor aou ar- ara arb arc ard are arf arg arh aro arr aru au- aua aub auc aud aue auf aug auh auo aur b-u baa bab bac bad bae baf bag bah bao bar bau bba bbb bbc bbd bbe bbf bbg bbh bbo bbr bbu bca bcb bcc bcd bce bcf bcg bch bco bcr bcu bda bdb bdc bdd bde bdf bdg bdh bdo bdr bdu be- bea beb bec bed bee bef beg beh beo ber beu bfa bfb bfc bfd bfe bff bfg bfh bfo bfr bfu bga bgb bgc bgd bge bgf bgg bgh bgo bgr bgu bha bhb bhc bhd bhe bhf bhg bhh bho bhr bhu boa bob boc bod boe bof bog boh boo bor bou bra brb brd bre brf brg brh bro brr bru bua bub buc bud bue buf bug buh buo bur buu c-- caa cab cac cad cae caf cag cah cao car cau cba cbb cbc cbd cbe cbf cbg cbh cbo cbr cbu cca ccb ccc ccd cce ccf ccg cch cco ccr ccu cda cdb cdc cdd cde cdf cdg cdh cdo cdr cdu ce- cea ceb cec ced cee cef ceg ceh ceo cer ceu cfa cfb cfc cfd cfe cff cfg cfh cfo cfr cfu cga cgb cgc cgd cge cgg cgh cgo cgr cgu ch- cha chb chc chd che chf chg chh cho chr chu co- coa cob coc cod coe cof cog coh coo cor cou cra crb crc crd cre crf crg crh cro crr cru cua cub cuc cud cue cuf cug cuh cuo cur cuu daa dab dac dad dae daf dag dah dao dar dau dba dbb dbc dbd dbe dbf dbg dbh dbo dbr dbu dca dcb dcc dcd dce dcf dcg dco dcr dcu dda ddb ddc ddd dde ddf ddg ddh ddo ddr ddu de- dea deb dec ded dee def deg deh deo der deu dfa dfb dfc dfd dfe dff dfg dfh dfo dfr dfu dga dgc dgd dge dgf dgg dgh dgr dgu dh- dha dhb dhc dhd dhe dhf dhh dho dhr dhu doa dob doc dod doe dof dog doh doo dor dou dra drb drc drd dre drg dro drr dru dua dub duc dud due duf dug duh duo dur eaa eab eac ead eae eaf eag eah eao ear eau eba ebb ebc ebd ebe ebf ebg ebh ebo ebr ebu ec- eca ecb ecc ecd ece ecf ecg ech eco ecr ecu ed- eda edb edc edd ede edf edg edh edo edr edu eea eeb eec eed eee eef eeg eeo eer ef- efa efb efc efd efe eff efg efh efo efr ega egb egc egd ege egf egg egh ego egr egu eha ehb ehc ehd ehe ehf ehg ehh eho ehr ehu eo- eoa eob eoc eod eoe eof eog eoh eoo eor eou era erb erc erd ere erf erg erh ero err eru eu- eua eub euc eud eue euf eug eur faa fab fac fad fae faf fag fah fao far fau fba fbb fbc fbd fbe fbf fbg fbh fbo fbr fbu fca fcb fcc fcd fce fcf fcg fco fcr fcu fda fdb fdc fdd fde fdf fdg fdh fdo fdr fdu fea feb fec fed fee fef feg feh feo fer feu ffa ffc ffd ffe fff ffg ffh ffo ffr ffu fga fgb fgc fgd fge fgf fgg fgh fgr fha fhb fhc fhe fhf fhg fhh fho fhr foa fob foc foe fof fog foh foo for fou fra frb frc frd fre frf frg frh fro frr fru fua fub fud fue fuf fug fuo fur fuu g-d gaa gab gac gad gae gaf gag gah gao gar gau gba gbc gbd gbe gbf gbg gbh gbo gbr gbu gca gcb gcc gcd gce gcf gcg gch gco gcr gcu gda gdb gdc gdd gde gdf gdh gdo gdr gdu ge- gea geb gec ged gee gef geg geh geo ger geu gfa gfb gfc gfd gfe gff gfh gfo gfr gga ggb ggc ggd ggg ggh ggo ggr ggu gha ghb ghc ghd ghe ghg ghh gho ghr goa gob goc god goe gof gog goh goo gor gou gra grb grc grd gre grf grg grh gro grr gru gu- gua gub guc gud gue guf gug guo gur guu haa hab hac had hae haf hag hah hao har hau hba hbb hbc hbd hbe hbf hbg hbh hbo hbr hbu hca hcb hcc hcd hce hcf hcg hch hco hcr hda hdb hdc hdd hde hdf hdg hdh hdo hdr hdu he- hea heb hec hed hee hef heg heh heo her heu hfa hfb hfc hfd hfe hff hfg hfh hfo hfr hfu hga hgb hgc hge hgf hgg hgh hgo hgr hgu hha hhb hhc hhd hhe hhf hhg hhh hho hhr hhu hoa hob hoc hod hoe hof hog hoh hoo hor hou hr- hra hrb hrc hrd hre hrf hrg hrh hro hrr hru hua hub huc hud hue huf hug huh huo hur huu oaa oab oac oad oae oaf oag oah oao oar oau ob- oba obb obc obd obe obf obg obh obo obr obu oc- oca ocb occ ocd ocf ocg och oco ocr ocu oda odb odc odd ode