-er -ic c-- ccc cce cci cco ccp ccr ccs cct ce- cec cee cei ceo cep cer ces cet ci- cic cie cii cio cip cir cis cit co- coc coe coi coo cop cor cos cot cpc cpe cpi cpo cpp cpr cps cpt crc cre cri cro crp crr crs crt csc cse csi cso csp csr css cst ctc cte cti cto ctp ctr cts ctt ec- ecc ece eci eco ecr ecs ect eec eee eeo eep eer ees eet eic eie eii eio eip eir eis eit eo- eoc eoe eoi eoo eop eor eos eot ep- epc epe epi epo epp epr eps ept erc ere eri ero erp err ers ert es- esc ese esi eso esp esr ess est etc ete eti eto etp etr ets ett icc ice ici ico icp icr ics ict ie- iec iee iei iep ier ies iet iic iie iii iio iip iir iis iit io- ioc ioe ioi ioo iop ior ios iot ipc ipe ipi ipo ipp ipr ips ipt ir- irc ire iri iro irp irr irs irt is- isc ise isi iso isp isr iss ist itc ite iti ito itp its itt o-i oc- occ oci oco ocp ocr ocs oct oec oee oei oeo oep oer oes oet oic oie oii oio oip oir ois oit oo- ooc ooi ooo oop oor oos oot op- opc ope opi opo opp opr ops opt or- orc ore ori oro orp orr ors ort os- osc ose osi oso osp osr oss ost ot- otc ote oti oto otp otr ots ott p-p pcc pce pci pco pcp pcr pcs pct pec pee pei peo pep per pes pet pic pie pii pio pip pir pis pit poc poe poi poo pop por pos pot ppc ppe ppi ppo ppp ppr pps ppt prc pre pri pro prp prr prs prt ps- psc pse psi pso psp psr pss pst pt- ptc pte pti pto ptp ptr pts ptt rcc rce rci rco rcp rcr rcs rct re- rec ree rei reo rep rer res ret ric rie rii rio rip rir ris rit roc roe roi roo rop ror ros rot rpc rpe rpi rpo rpp rpr rps rpt rrc rri rrp rrr rrs rrt rsc rse rsi rso rsp rsr rss rst rtc rte rti rto rtp rtr rts rtt scc sce sci sco scp scr scs sct se- sec see sei seo sep ser ses set sic sie sii sio sip sir sis sit soc soe soi soo sop sor sos sot spc spe spi spo spp spr sps spt sr- src sre sri sro srp srr srs srt ss- ssc sse ssi sso ssp ssr sss sst stc ste sti sto stp str sts stt tcc tce tci tco tcp tcr tcs tct te- tec tee tei teo tep ter tes tet tic tie tii tio tip tir tis tit to- toc toe toi too top tor tos tot tpc tpe tpi tpo tpp tpr tps tpt trc tre tri tro trp trr trs trt tsc tse tsi tso tsp tsr tss tst ttc tte tti tto ttp ttr tts ttt