-er -ic c-- ccc cce cci ccr ccs ccu ce- cec cee cei ceq cer ces ceu ci- cic cie cii ciq cir cis ciu cqc cqi cqs crc cre cri crq crr crs cru csc cse csi csq csr css csu cuc cue cui cuq cur cus cuu ec- ecc ece eci ecq ecr ecs ecu eec eee eer ees eic eie eii eir eis eiu eqe eqq eqs equ erc ere eri erq err ers eru es- esc ese esi esq esr ess esu eu- euc eue eui eur eus icc ice ici icq icr ics icu ie- iec iee iei ier ies iic iie iii iir iis iiu iqc iqe iqs iqu ir- irc ire iri irq irr irs iru is- isc ise isi isq isr iss isu iu- iuc iue iui iur ius qcc qci qcs qec qee qic qie qir qis qiu qqq qqu qrc qre qri qrs qru qsc qsi qsr qu- que qui qur qus rcc rce rci rcr rcs rcu re- rec ree rei req rer res reu ric rie rii riq rir ris rqc rqs rrc rri rrq rrr rrs rru rsc rse rsi rsq rsr rss rsu ruc rue rui rur rus ruu scc sce sci scr scs scu se- sec see sei seq ser ses seu sic sie sii siq sir sis siu sqi sqq sqr sqs sr- src sre sri srq srr srs ss- ssc sse ssi ssq ssr sss ssu suc sue sui suq sur sus suu ucc uce uci ucr ucs ucu uec uee uei uer ues uic uie uii uiq uir uis uiu ur- urc ure uri urr urs uru usc use usi usr uss usu uuc uue uur uus uuu