-er c-- ccc cce cco ccr ccs cct ccx ce- cec cee ceo cer ces cet cex co- coc coe coo cor cos cot cox crc cre cro crr crs crt crx csc cse cso csr css cst csx ctc cte cto ctr cts ctt ctx cxc cxo cxr cxs cxt cxx ec- ecc ece eco ecr ecs ect ecx eec eee eeo eer ees eet eex eo- eoc eoe eoo eor eos eot erc ere ero err ers ert es- esc ese eso esr ess est esx etc ete eto etr ets ett etx ex- exc exe exo exr exs ext exx oc- occ oco ocr ocs oct ocx oec oee oeo oer oes oet oex oo- ooc ooo oor oos oot oox or- orc ore oro orr ors ort orx os- osc ose oso osr oss ost osx ot- otc ote oto otr ots ott ox- oxc oxo oxt oxx rcc rce rco rcr rcs rct rcx re- rec ree reo rer res ret rex roc roe roo ror ros rot rox rrc rrr rrs rrt rsc rse rso rsr rss rst rsx rtc rte rto rtr rts rtt rtx rxr rxs scc sce sco scr scs sct scx se- sec see seo ser ses set sex soc soe soo sor sos sot sox sr- src sre sro srr srs srt srx ss- ssc sse sso ssr sss sst ssx stc ste sto str sts stt stx sxc sxs sxt t-x tcc tce tco tcr tcs tct tcx te- tec tee teo ter tes tet tex to- toc toe too tor tos tot tox trc tre tro trr trs trt trx tsc tse tso tsr tss tst tsx ttc tte tto ttr tts ttt ttx txe txs txt xcr xcx xee xer xes xet xex xoc xoo xor xos xot xox xrc xrt xrx xsc xss xst xtc xtr xts xtx xxo xxx

-ose cccc cccs ccee ccoc ccrc ccre ccrs ccrt ccss ccst cctc cctt cec- cece ceco cecs cect ceec cees ceor ceos cer- cerc cere cero cers cert cesc cese cesr cess cest cet- cete ceto cets cexe coce coco coct coes coex coos coot cor- corc core coro corr cors cort cosc cose coso coss cost cotc cote coto cots cott coxe crcc crce crcr cre- crec cree creo cres cret crex croc croe croo cror crot crrt crss crst crtc crts cscc csce csco cscr cscs csec csee cser cset csor csos csot csox csrc csrs csse cssr cstc csto cstr csts cstx csxt ctec ctor ctos ctot ctrc ctrs ctsc ctss ctts cxro cxxx eccc ecce ecco ecct eces eco- ecos ecot ecrc ecrr ecsc ecse ecss ect- ectc ecto ects eecs eeee eees eeoc eerc eero eers eese eetc eete eets eext eoes eore eost eotc eoto eots er-x ercc erce erec erer eres eret eroc eroe eroo eros errc erre erro errs erse erso erst erts esce esco escr escs esee eseo eser eses eset eso- esos esox esse esso esst estc este esto estr ests etcc etco etcs etec etee eter etes etoe etos etox etre etro ette etto exco exec exer exes exo- exor exos exrx exte extr exts o-eo occc occt oce ocee ocet ocos ocre ocro ocrr ocrs oct- octe octo octs oec- oecc oeec oere oers oese oest oocr ooer ooes oooo ooos oore oort oose oost oots orce orco orcs ore- orec oreo orer ores orex oro- oroe oror oros orot orro orrs orse orso ortc orte orto orts oscc osce osco osec osee oser oses oset osoo osor osos osro osse osso ostc oste ostr osts otee oter otes oto- otoe otoo otor otos otre otro otrs otse otso otte otto otts oxer oxes oxo- oxos oxox oxxo rccc rccs rcet rcos rcsc rcss rctc rcts recc rece recr recs rect rees reet reos reot rere rero rers rert rese reso ress rest rete reto retr rets rett rexx rocc roce roco rocs roer roes roet roor roos root roox rorc rore roro rort rosc rose roso ross rost rotc rote roto rotr rots rott roxo rrrr rscc rscs rsee rsos rsre rsts rtcc rtce rtee rtes rtex rtss rtts rxes s-os sccc scce sccs scct scec scee scer scet scoo scor scot scox scr- scrc scre scrs scsc scso scsr scst sctc scto sctr scts se-c se-e se-o se-s se-t se-x sec- secc sece seco secr secs sect seec seer sees seet seex seoc serc sere sero serr sers sert sesc sese seso sess sest set- setc sete seto sets sett setx sex- sexe sext soce soco socr socs socx soec soeo soes soor soos soot sore soro sorr sors sort sose soso soss sost sotc sote soto sots soxs srcc srct srec sreo sres sros srtr sscc ssce sscs ssec ssee sses sset ssex ssoc ssot ssrc ssrs sssc ssss sstc ssts stcc stcs stec stee steo ster stes stet stex stoe stoo stor stos stot stox strc stre stro strs stss sttc sttr tccc tcos tctc tcts teco tecr tecs tect teec teer tees teet teor teos ter- terc tere tero terr ters tesc tese teso tess test tete teto tetr tets tett tetx text toce toco toee toer toes toet toor toos toot torc tore toro torr tors tort torx tosc tose toso toss tost tosx totc tote toto totr tots tott tox- toxo toxs toxt trcc tre- trec tree treo tres tret trex troc troe troo tros trot trox trst trtc trte trtr tscc tsec tses tset tsos tsse tssr tsst tstc tsts tteo tter ttoe ttss tttt txtr xces xeer xer- xero xers xert xexe xoco xoro xors xote xoxo xtro xtsr xxxo xxxx

-tree c-cor c-tec ccccc ccett ceco- cecos ceere ceese ceoce ceoor ceose cerc- cerce cerco cercs cerec cerer ceres ceret cero- ceroc ceros cerre cerro cerrs cerse cerss certe certs cesce cescr cesse ceste cests cetes ceto- cette co-co cocc- cocce cocco coceo cocos cocto coers coest coete cooee cooer coore coors coost