-er a-a a-c aaa aac aae aag aak aao aar aaw ac- aca acc ace acg ack aco acr acw aea aec aee aeg aek aeo aer aew ag- aga agc age agg agk ago agr agw aka akc ake akg akk ako akr akw aoa aoc aoe aog aok aoo aor aow ar- ara arc are arg ark aro arr arw aw- awa awc awe awg awk awo awr aww c-- caa cac cae cag cak cao car caw cca ccc cce ccg cck cco ccr ccw ce- cea cec cee ceg cek ceo cer cew cga cgc cge cgg cgo cgr cgw cka ckc cko ckw co- coa coc coe cog cok coo cor cow cra crc cre crg crk cro crr crw cw- cwa cwc cwe cwg cwk cwo cwr eaa eac eae eag eak eao ear eaw ec- eca ecc ece ecg eck eco ecr ecw eea eec eee eeg eek eeo eer eew ega egc ege egg ego egr egw eka ekc eke ekg eko ekr eo- eoa eoc eoe eog eok eoo eor eow era erc ere erg erk ero err erw ewa ewc ewe ewk ewo ewr eww gaa gac gae gag gak gao gar gaw gca gcc gce gcg gck gco gcr gcw ge- gea gec gee geg gek geo ger gew gga ggc ggg ggo ggr ggw gka gko goa goc goe gog gok goo gor gow gra grc gre grg grk gro grr grw gwa gwc gwe gwg gwk gwr ka- kaa kac kae kag kak kao kar kaw kca kcc kce kcg kck kcr ke- kea kec kee keg kek keo ker kew kga kgc kgo kgw kkc kke kkk kkr koa koc koe kog kok koo kor kow kra krc krg krk kro krr krw kw- kwa kwc kwg kwk kwo kww oaa oac oae oag oak oao oar oaw oc- oca occ ocg ock oco ocr ocw oea oec oee oeg oeo oer oga ogc oge ogg ogo oka okc oke okg okk oko okr okw oo- ooa ooc oog ook ooo oor oow or- ora orc ore org ork oro orr owa owc owe owk owo oww ra- raa rac rae rag rak rao rar raw rca rcc rce rcg rco rcr rcw re- rea rec ree reg rek reo rer rew rga rgc rge rgg rgk rgo rgr rgw rkc rke rkg rkk rko roa roc roe rog rok roo ror row rra rrc rrg rrk rrr rwa rwc rwe rwr waa wac wae wag wak wao war waw wca wcc wce wcg wck wco wcr wcw wea wec wee weg wek weo wer wew wga wgc wgo wgr wgw wka wkc wke wkg wko wkr wkw woa woc woe wog wok woo wor wow wr- wra wrc wre wrg wrk wro wrr wrw wwa wwc wwe wwo www