-er -ic c-- ccc ccd cce ccf cci cco ccr ccs cct ccu cdc cdd cde cdf cdi cdo cdr cds cdt cdu ce- cec ced cee cef cei ceo cer ces cet ceu cfc cfd cfe cff cfi cfo cfr cfs cft cfu ci- cic cid cie cif cii cio cir cis cit ciu co- coc cod coe cof coi coo cor cos cot cou crc crd cre crf cri cro crr crs crt cru csc csd cse csf csi cso csr css cst csu ctc ctd cte ctf cti cto ctr cts ctt ctu cuc cud cue cuf cui cuo cur cus cut cuu dcc dcd dce dcf dci dco dcr dcs dct dcu ddc ddd dde ddf ddi ddo ddr dds ddt ddu de- dec ded dee def dei deo der des det deu dfc dfd dfe dff dfi dfo dfr dfs dft dfu di- dic did die dif dii dio dir dis dit diu doc dod doe dof doi doo dor dos dot dou drc drd dre dri dro drr drs drt dru dsc dsd dse dsf dsi dso dsr dss dst dsu dtc dtd dte dtf dti dto dtr dts dtt dtu duc dud due duf dui duo dur dus dut ec- ecc ecd ece ecf eci eco ecr ecs ect ecu ed- edc edd ede edf edi edo edr eds edt edu eec eed eee eef eeo eer ees eet ef- efc efd efe eff efi efo efr efs eft eic eid eie eif eii eio eir eis eit eiu eo- eoc eod eoe eof eoi eoo eor eos eot eou erc erd ere erf eri ero err ers ert eru es- esc esd ese esf esi eso esr ess est esu etc etd ete etf eti eto etr ets ett etu eu- euc eud eue euf eui eur eus eut fcc fcd fce fcf fci fco fcr fcs fct fcu fdc fdd fde fdf fdi fdo fdr fds fdt fdu fec fed fee fef fei feo fer fes fet feu ffc ffd ffe fff ffi ffo ffr ffs fft ffu fic fid fie fif fii fir fis fit fiu foc foe fof foi foo for fos fot fou frc frd fre frf fri fro frr frs frt fru fsc fsd fse fsf fsi fso fsr fss fst fsu ftc ftd fte ftf fti fto ftr fts ftt ftu fud fue fuf fui fuo fur fus fut fuu i-d i-f icc icd ice icf ici ico icr ics ict icu idc idd ide idf idi ido idr ids idt idu ie- iec ied iee ief iei ier ies iet ifc ifd ife iff ifi ifo ifr ifs ift ifu iic iid iie iif iii iio iir iis iit iiu io- ioc iod ioe iof ioi ioo ior ios iot iou ir- irc ird ire irf iri iro irr irs irt iru is- isc isd ise isf isi iso isr iss ist isu itc itd ite itf iti ito its itt itu iu- iuc iud iue iui iur ius iut o-i oc- occ ocd ocf oci oco ocr ocs oct ocu odc odd ode odf odi odo odr ods odt odu oec oed oee oef oei oeo oer oes oet of- ofc ofd ofe off ofi ofo ofr ofs oft ofu oic oid oie oif oii oio oir ois oit oiu oo- ooc ood oof ooi ooo oor oos oot or- orc ord ore orf ori oro orr ors ort oru os- osc osd ose osf osi oso osr oss ost osu ot- otc otd ote otf oti oto otr ots ott otu ou- ouc oud oue ouf oui ouo our ous out rcc rcd rce rcf rci rco rcr rcs rct rcu rdc rdd rde rdf rdi rdo rdr rds rdt rdu re- rec red ree ref rei reo rer res ret reu rfc rfd rfe rff rfi rfo rfr rfs rft rfu ric rid rie rif rii rio rir ris rit roc rod roe rof roi roo ror ros rot rou rrc rrd rrf rri rrr rrs rrt rru rsc rsd rse rsf rsi rso rsr rss rst rsu rtc rtd rte rtf rti rto rtr rts rtt rtu ruc rud rue ruf rui ruo rur rus rut ruu scc scd sce scf sci sco scr scs sct scu sdc sdd sde sdf sdi sdo sdr sds sdt sdu se- sec sed see sef sei seo ser ses set seu sfc sfd sfe sff sfi sfo sfr sfs sft sfu sic sid sie sif sii sio sir sis sit siu soc sod soe sof soi soo sor sos sot sou sr- src srd sre srf sri sro srr srs srt ss- ssc ssd sse ssf ssi sso ssr sss sst ssu stc std ste stf sti sto str sts stt stu suc sud sue suf sui suo sur sus sut suu tcc tcd tce tcf tci tco tcr tcs tct tcu tdc tdd tde tdf tdi tdo tdr tds tdt tdu te- tec ted tee tef tei teo ter tes tet teu tfc tfd tfe tff tfi tfo tfr tfs tft tfu tic tid tie tif tii tio tir tis tit tiu to- toc tod toe tof toi too tor tos tot tou trc trd tre trf tri tro trr trs trt tru tsc tsd tse tsf tsi tso tsr tss tst tsu ttc ttd tte ttf tti tto ttr tts ttt ttu tuc tud tue tuf tui tuo tur tus tut tuu ucc ucd uce ucf uci uco ucr ucs uct ucu udc udd ude udf udi udo udr uds udt udu uec ued uee uef uei uer ues uet ufc ufd ufe uff ufi ufo ufr ufs uft ufu uic uid uie uif uii uio uir uis uit uiu uoc uod uoe uoo uor uos uot ur- urc urd ure urf uri uro urr urs urt uru usc usd use usf usi uso usr uss ust usu utc utd ute utf uti uto utr uts utt utu uuc uue uur uus