-er -ic c-- ccc cce cci cco ccr ccs cct ccu ce- cec cee cei ceo cer ces cet ceu ci- cic cie cii cio cir cis cit ciu co- coc coe coi coo cor cos cot cou crc cre cri cro crr crs crt cru csc cse csi cso csr css cst csu ctc cte cti cto ctr cts ctt ctu cuc cue cui cuo cur cus cut cuu ec- ecc ece eci eco ecr ecs ect ecu eec eee eeo eer ees eet eic eie eii eio eir eis eit eiu eo- eoc eoe eoi eoo eor eos eot eou erc ere eri ero err ers ert eru es- esc ese esi eso esr ess est esu etc ete eti eto etr ets ett etu eu- euc eue eui eur eus eut icc ice ici ico icr ics ict icu ie- iec iee iei ier ies iet iic iie iii iio iir iis iit iiu io- ioc ioe ioi ioo ior ios iot iou ir- irc ire iri iro irr irs irt iru is- isc ise isi iso isr iss ist isu itc ite iti ito its itt itu iu- iuc iue iui iur ius iut o-i oc- occ oci oco ocr ocs oct ocu oec oee oei oeo oer oes oet oic oie oii oio oir ois oit oiu oo- ooc ooi ooo oor oos oot or- orc ore ori oro orr ors ort oru os- osc ose osi oso osr oss ost osu ot- otc ote oti oto otr ots ott otu ou- ouc oue oui ouo our ous out rcc rce rci rco rcr rcs rct rcu re- rec ree rei reo rer res ret reu ric rie rii rio rir ris rit roc roe roi roo ror ros rot rou rrc rri rrr rrs rrt rru rsc rse rsi rso rsr rss rst rsu rtc rte rti rto rtr rts rtt rtu ruc rue rui ruo rur rus rut ruu scc sce sci sco scr scs sct scu se- sec see sei seo ser ses set seu sic sie sii sio sir sis sit siu soc soe soi soo sor sos sot sou sr- src sre sri sro srr srs srt ss- ssc sse ssi sso ssr sss sst ssu stc ste sti sto str sts stt stu suc sue sui suo sur sus sut suu tcc tce tci tco tcr tcs tct tcu te- tec tee tei teo ter tes tet teu tic tie tii tio tir tis tit tiu to- toc toe toi too tor tos tot tou trc tre tri tro trr trs trt tru tsc tse tsi tso tsr tss tst tsu ttc tte tti tto ttr tts ttt ttu tuc tue tui tuo tur tus tut tuu ucc uce uci uco ucr ucs uct ucu uec uee uei uer ues uet uic uie uii uio uir uis uit uiu uoc uoe uoo uor uos uot ur- urc ure uri uro urr urs urt uru usc use usi uso usr uss ust usu utc ute uti uto utr uts utt utu uuc uue uur uus uut uuu