-er c-- ccc cce ccn ccr ccs ccu ccz ce- cec cee cen cer ces ceu cez cn- cnc cne cnn cnr cns cnu crc cre crn crr crs cru crz csc cse csn csr css csu csz cuc cue cun cur cus cuu cuz cz- czc cze ec- ecc ece ecn ecr ecs ecu eec eee een eer ees en- enc ene enn enr ens enu enz erc ere ern err ers eru erz es- esc ese esn esr ess esu eu- euc eue eun eur eus eze ezr ezs ezz ncc nce ncn ncr ncs ncu ne- nec nee nen ner nes neu nez nnc nne nnn nns nnu nnz nrc nre nrn nrr nrs nru nrz nsc nse nsn nsr nss nsu nsz nuc nue nun nur nus nuu nze nzs nzz rcc rce rcn rcr rcs rcu re- rec ree ren rer res reu rez rnc rnn rnr rns rnu rnz rrc rrn rrr rrs rru rsc rse rsn rsr rss rsu ruc rue run rur rus ruu ruz rze scc sce scn scr scs scu se- sec see sen ser ses seu sez snc sne snn snr sns snu sr- src sre srn srr srs ss- ssc sse ssn ssr sss ssu ssz suc sue sun sur sus suu suz sze szr szu ucc uce ucn ucr ucs ucu uec uee uen uer ues un- unc une unn unr uns unu ur- urc ure urn urr urs uru urz usc use usn usr uss usu usz uuc uue uun uur uus uuu uzu zce zcs zec zee zen zer zes zez znc zne znn zns zrs zse zsu zsz zuc zun zur zus zuz zzr zzs zzz