-er -ic c-- ccc cce ccf cci cco ccr ccs cct ccu ce- cec cee cef cei ceo cer ces cet ceu cfc cfe cff cfi cfo cfr cfs cft cfu ci- cic cie cif cii cio cir cis cit ciu co- coc coe cof coi coo cor cos cot cou crc cre crf cri cro crr crs crt cru csc cse csf csi cso csr css cst csu ctc cte ctf cti cto ctr cts ctt ctu cuc cue cuf cui cuo cur cus cut cuu ec- ecc ece ecf eci eco ecr ecs ect ecu eec eee eef eeo eer ees eet ef- efc efe eff efi efo efr efs eft eic eie eif eii eio eir eis eit eiu eo- eoc eoe eof eoi eoo eor eos eot eou erc ere erf eri ero err ers ert eru es- esc ese esf esi eso esr ess est esu etc ete etf eti eto etr ets ett etu eu- euc eue euf eui eur eus eut fcc fce fcf fci fco fcr fcs fct fcu fec fee fef fei feo fer fes fet feu ffc ffe fff ffi ffo ffr ffs fft ffu fic fie fif fii fir fis fit fiu foc foe fof foi foo for fos fot fou frc fre frf fri fro frr frs frt fru fsc fse fsf fsi fso fsr fss fst fsu ftc fte ftf fti fto ftr fts ftt ftu fue fuf fui fuo fur fus fut fuu i-f icc ice icf ici ico icr ics ict icu ie- iec iee ief iei ier ies iet ifc ife iff ifi ifo ifr ifs ift ifu iic iie iif iii iio iir iis iit iiu io- ioc ioe iof ioi ioo ior ios iot iou ir- irc ire irf iri iro irr irs irt iru is- isc ise isf isi iso isr iss ist isu itc ite itf iti ito its itt itu iu- iuc iue iui iur ius iut o-i oc- occ ocf oci oco ocr ocs oct ocu oec oee oef oei oeo oer oes oet of- ofc ofe off ofi ofo ofr ofs oft ofu oic oie oif oii oio oir ois oit oiu oo- ooc oof ooi ooo oor oos oot or- orc ore orf ori oro orr ors ort oru os- osc ose osf osi oso osr oss ost osu ot- otc ote otf oti oto otr ots ott otu ou- ouc oue ouf oui ouo our ous out rcc rce rcf rci rco rcr rcs rct rcu re- rec ree ref rei reo rer res ret reu rfc rfe rff rfi rfo rfr rfs rft rfu ric rie rif rii rio rir ris rit roc roe rof roi roo ror ros rot rou rrc rrf rri rrr rrs rrt rru rsc rse rsf rsi rso rsr rss rst rsu rtc rte rtf rti rto rtr rts rtt rtu ruc rue ruf rui ruo rur rus rut ruu scc sce scf sci sco scr scs sct scu se- sec see sef sei seo ser ses set seu sfc sfe sff sfi sfo sfr sfs sft sfu sic sie sif sii sio sir sis sit siu soc soe sof soi soo sor sos sot sou sr- src sre srf sri sro srr srs srt ss- ssc sse ssf ssi sso ssr sss sst ssu stc ste stf sti sto str sts stt stu suc sue suf sui suo sur sus sut suu tcc tce tcf tci tco tcr tcs tct tcu te- tec tee tef tei teo ter tes tet teu tfc tfe tff tfi tfo tfr tfs tft tfu tic tie tif tii tio tir tis tit tiu to- toc toe tof toi too tor tos tot tou trc tre trf tri tro trr trs trt tru tsc tse tsf tsi tso tsr tss tst tsu ttc tte ttf tti tto ttr tts ttt ttu tuc tue tuf tui tuo tur tus tut tuu ucc uce ucf uci uco ucr ucs uct ucu uec uee uef uei uer ues uet ufc ufe uff ufi ufo ufr ufs uft ufu uic uie uif uii uio uir uis uit uiu uoc uoe uoo uor uos uot ur- urc ure urf uri uro urr urs urt uru usc use usf usi uso usr uss ust usu utc ute utf uti uto utr uts utt utu uuc uue uur uus uut uuu