-er -ic c-- ccc ccd cce cci cco ccr ccs cct ccu cdc cdd cde cdi cdo cdr cds cdt cdu ce- cec ced cee cei ceo cer ces cet ceu ci- cic cid cie cii cio cir cis cit ciu co- coc cod coe coi coo cor cos cot cou crc crd cre cri cro crr crs crt cru csc csd cse csi cso csr css cst csu ctc ctd cte cti cto ctr cts ctt ctu cuc cud cue cui cuo cur cus cut cuu dcc dcd dce dci dco dcr dcs dct dcu ddc ddd dde ddi ddo ddr dds ddt ddu de- dec ded dee dei deo der des det deu di- dic did die dii dio dir dis dit diu doc dod doe doi doo dor dos dot dou drc drd dre dri dro drr drs drt dru dsc dsd dse dsi dso dsr dss dst dsu dtc dtd dte dti dto dtr dts dtt dtu duc dud due dui duo dur dus dut ec- ecc ecd ece eci eco ecr ecs ect ecu ed- edc edd ede edi edo edr eds edt edu eec eed eee eeo eer ees eet eic eid eie eii eio eir eis eit eiu eo- eoc eod eoe eoi eoo eor eos eot eou erc erd ere eri ero err ers ert eru es- esc esd ese esi eso esr ess est esu etc etd ete eti eto etr ets ett etu eu- euc eud eue eui eur eus eut i-d icc icd ice ici ico icr ics ict icu idc idd ide idi ido idr ids idt idu ie- iec ied iee iei ier ies iet iic iid iie iii iio iir iis iit iiu io- ioc iod ioe ioi ioo ior ios iot iou ir- irc ird ire iri iro irr irs irt iru is- isc isd ise isi iso isr iss ist isu itc itd ite iti ito its itt itu iu- iuc iud iue iui iur ius iut o-i oc- occ ocd oci oco ocr ocs oct ocu odc odd ode odi odo odr ods odt odu oec oed oee oei oeo oer oes oet oic oid oie oii oio oir ois oit oiu oo- ooc ood ooi ooo oor oos oot or- orc ord ore ori oro orr ors ort oru os- osc osd ose osi oso osr oss ost osu ot- otc otd ote oti oto otr ots ott otu ou- ouc oud oue oui ouo our ous out rcc rcd rce rci rco rcr rcs rct rcu rdc rdd rde rdi rdo rdr rds rdt rdu re- rec red ree rei reo rer res ret reu ric rid rie rii rio rir ris rit roc rod roe roi roo ror ros rot rou rrc rrd rri rrr rrs rrt rru rsc rsd rse rsi rso rsr rss rst rsu rtc rtd rte rti rto rtr rts rtt rtu ruc rud rue rui ruo rur rus rut ruu scc scd sce sci sco scr scs sct scu sdc sdd sde sdi sdo sdr sds sdt sdu se- sec sed see sei seo ser ses set seu sic sid sie sii sio sir sis sit siu soc sod soe soi soo sor sos sot sou sr- src srd sre sri sro srr srs srt ss- ssc ssd sse ssi sso ssr sss sst ssu stc std ste sti sto str sts stt stu suc sud sue sui suo sur sus sut suu tcc tcd tce tci tco tcr tcs tct tcu tdc tdd tde tdi tdo tdr tds tdt tdu te- tec ted tee tei teo ter tes tet teu tic tid tie tii tio tir tis tit tiu to- toc tod toe toi too tor tos tot tou trc trd tre tri tro trr trs trt tru tsc tsd tse tsi tso tsr tss tst tsu ttc ttd tte tti tto ttr tts ttt ttu tuc tud tue tui tuo tur tus tut tuu ucc ucd uce uci uco ucr ucs uct ucu udc udd ude udi udo udr uds udt udu uec ued uee uei uer ues uet uic uid uie uii uio uir uis uit uiu uoc uod uoe uoo uor uos uot ur- urc urd ure uri uro urr urs urt uru usc usd use usi uso usr uss ust usu utc utd ute uti uto utr uts utt utu uuc uue uur uus uut uuu