-er -ol c-- ccc ccd cce ccg ccl cco ccr ccs ccu cdc cdd cde cdg cdl cdo cdr cds cdu ce- cec ced cee ceg cel ceo cer ces ceu cgc cgd cge cgg cgl cgo cgr cgs cgu cl- clc cld cle clg cll clo clr cls clu co- coc cod coe cog col coo cor cos cou crc crd cre crg crl cro crr crs cru csc csd cse csg csl cso csr css csu cuc cud cue cug cul cuo cur cus cuu dcc dcd dce dcg dcl dco dcr dcs dcu ddc ddd dde ddg ddl ddo ddr dds ddu de- dec ded dee deg del deo der des deu dgc dgd dge dgg dgl dgr dgs dgu dl- dlc dld dle dlg dll dlo dlr dls dlu doc dod doe dog dol doo dor dos dou drc drd dre drg drl dro drr drs dru dsc dsd dse dsg dsl dso dsr dss dsu duc dud due dug dul duo dur dus ec- ecc ecd ece ecg ecl eco ecr ecs ecu ed- edc edd ede edg edl edo edr eds edu eec eed eee eeg eel eeo eer ees egc egd ege egg egl ego egr egs egu elc eld ele elg ell elo elr els elu eo- eoc eod eoe eog eol eoo eor eos eou erc erd ere erg erl ero err ers eru es- esc esd ese esg esl eso esr ess esu eu- euc eud eue eug eul eur eus g-d gcc gcd gce gcg gcl gco gcr gcs gcu gdc gdd gde gdl gdo gdr gds gdu ge- gec ged gee geg gel geo ger ges geu ggc ggd ggg ggo ggr ggs ggu glc gld gle glg gll glo glr gls glu goc god goe gog gol goo gor gos gou grc grd gre grg grl gro grr grs gru gsc gsd gse gsg gsl gso gsr gss gsu gu- guc gud gue gug gul guo gur gus guu lcc lcd lce lcg lcl lco lcr lcs lcu ldc ldd lde ldg ldl ldo ldr lds ldu lec led lee leg lel leo ler les leu lgc lgd lge lgg lgl lgo lgr lgs lgu llc lld lle llg lll llo llr lls llu loc lod loe log lol loo lor los lou lrc lrd lrg lro lrr lrs lru lsc lsd lse lsg lsl lso lsr lss lsu luc lud lue lug lul luo lur lus luu oc- occ ocd ocg ocl oco ocr ocs ocu odc odd ode odg odl odo odr ods odu oec oed oee oeg oel oeo oer oes ogc ogd oge ogg ogl ogo ogs olc old ole olg oll olo ols olu oo- ooc ood oog ool ooo oor oos or- orc ord ore org orl oro orr ors oru os- osc osd ose osg osl oso osr oss osu ou- ouc oud oue oul ouo our ous rcc rcd rce rcg rcl rco rcr rcs rcu rdc rdd rde rdg rdl rdo rdr rds rdu re- rec red ree reg rel reo rer res reu rgc rgd rge rgg rgo rgr rgs rlc rld rle rlg rll rlo rlr rls rlu roc rod roe rog rol roo ror ros rou rrc rrd rrg rrl rrr rrs rru rsc rsd rse rsg rsl rso rsr rss rsu ruc rud rue rug ruo rur rus ruu scc scd sce scg scl sco scr scs scu sdc sdd sde sdg sdl sdo sdr sds sdu se- sec sed see seg sel seo ser ses seu sgc sgd sge sgg sgl sgo sgr sgs sgu slc sld sle slg sll slo slr sls slu soc sod soe sog sol soo sor sos sou sr- src srd sre srg srl sro srr srs ss- ssc ssd sse ssg ssl sso ssr sss ssu suc sud sue sug sul suo sur sus suu ucc ucd uce ucg ucl uco ucr ucs ucu udc udd ude udg udl udo udr uds udu uec ued uee ueg uel uer ues ugc uge ugg ugl ugo ugr ugs ugu ulc uld ule ulg ull ulo ulr uls ulu uoc uod uoe uog uol uoo uor uos ur- urc urd ure urg url uro urr urs uru usc usd use usg usl uso usr uss usu uuc uue uug uur uus uuu