-er c-- ccc cce ccn cco ccr cct ccu ce- cec cee cen ceo cer cet ceu cn- cnc cne cnn cno cnr cnt cnu co- coc coe con coo cor cot cou crc cre crn cro crr crt cru ctc cte ctn cto ctr ctt ctu cuc cue cun cuo cur cut cuu ec- ecc ece ecn eco ecr ect ecu eec eee een eeo eer eet en- enc ene enn eno enr ent enu eo- eoc eoe eon eoo eor eot eou erc ere ern ero err ert eru etc ete etn eto etr ett etu eu- euc eue eun eur eut ncc nce ncn nco ncr nct ncu ne- nec nee nen neo ner net neu nnc nne nnn nno nnt nnu no- noc noe non noo nor not nou nrc nre nrn nro nrr nrt nru ntc nte ntn nto ntr ntt ntu nuc nue nun nuo nur nut nuu oc- occ ocn oco ocr oct ocu oec oee oen oeo oer oet on- onc one onn ono onr ont onu oo- ooc oon ooo oor oot or- orc ore orn oro orr ort oru ot- otc ote otn oto otr ott otu ou- ouc oue oun ouo our out rcc rce rcn rco rcr rct rcu re- rec ree ren reo rer ret reu rnc rnn rno rnr rnt rnu roc roe ron roo ror rot rou rrc rrn rrr rrt rru rtc rte rtn rto rtr rtt rtu ruc rue run ruo rur rut ruu tcc tce tcn tco tcr tct tcu te- tec tee ten teo ter tet teu tnc tne tnn tno tnr tnt to- toc toe ton too tor tot tou trc tre trn tro trr trt tru ttc tte ttn tto ttr ttt ttu tuc tue tun tuo tur tut tuu ucc uce ucn uco ucr uct ucu uec uee uen uer uet un- unc une unn uno unr unt unu uoc uoe uon uoo uor uot ur- urc ure urn uro urr urt uru utc ute utn uto utr utt utu uuc uue uun uur uut uuu