-er c-- ccc cce ccn cco ccr ccs cct ccu ce- cec cee cen ceo cer ces cet ceu cn- cnc cne cnn cno cnr cns cnt cnu co- coc coe con coo cor cos cot cou crc cre crn cro crr crs crt cru csc cse csn cso csr css cst csu ctc cte ctn cto ctr cts ctt ctu cuc cue cun cuo cur cus cut cuu ec- ecc ece ecn eco ecr ecs ect ecu eec eee een eeo eer ees eet en- enc ene enn eno enr ens ent enu eo- eoc eoe eon eoo eor eos eot eou erc ere ern ero err ers ert eru es- esc ese esn eso esr ess est esu etc ete etn eto etr ets ett etu eu- euc eue eun eur eus eut ncc nce ncn nco ncr ncs nct ncu ne- nec nee nen neo ner nes net neu nnc nne nnn nno nns nnt nnu no- noc noe non noo nor nos not nou nrc nre nrn nro nrr nrs nrt nru nsc nse nsn nso nsr nss nst nsu ntc nte ntn nto ntr nts ntt ntu nuc nue nun nuo nur nus nut nuu oc- occ ocn oco ocr ocs oct ocu oec oee oen oeo oer oes oet on- onc one onn ono onr ons ont onu oo- ooc oon ooo oor oos oot or- orc ore orn oro orr ors ort oru os- osc ose osn oso osr oss ost osu ot- otc ote otn oto otr ots ott otu ou- ouc oue oun ouo our ous out rcc rce rcn rco rcr rcs rct rcu re- rec ree ren reo rer res ret reu rnc rnn rno rnr rns rnt rnu roc roe ron roo ror ros rot rou rrc rrn rrr rrs rrt rru rsc rse rsn rso rsr rss rst rsu rtc rte rtn rto rtr rts rtt rtu ruc rue run ruo rur rus rut ruu scc sce scn sco scr scs sct scu se- sec see sen seo ser ses set seu snc sne snn sno snr sns snt snu soc soe son soo sor sos sot sou sr- src sre srn sro srr srs srt ss- ssc sse ssn sso ssr sss sst ssu stc ste stn sto str sts stt stu suc sue sun suo sur sus sut suu tcc tce tcn tco tcr tcs tct tcu te- tec tee ten teo ter tes tet teu tnc tne tnn tno tnr tns tnt to- toc toe ton too tor tos tot tou trc tre trn tro trr trs trt tru tsc tse tsn tso tsr tss tst tsu ttc tte ttn tto ttr tts ttt ttu tuc tue tun tuo tur tus tut tuu ucc uce ucn uco ucr ucs uct ucu uec uee uen uer ues uet un- unc une unn uno unr uns unt unu uoc uoe uon uoo uor uos uot ur- urc ure urn uro urr urs urt uru usc use usn uso usr uss ust usu utc ute utn uto utr uts utt utu uuc uue uun uur uus uut uuu