-er -ic c-- ccc ccd cce cci cco ccp ccr ccs cct cdc cdd cde cdi cdo cdp cdr cds cdt ce- cec ced cee cei ceo cep cer ces cet ci- cic cid cie cii cio cip cir cis cit co- coc cod coe coi coo cop cor cos cot cpc cpd cpe cpi cpo cpp cpr cps cpt crc crd cre cri cro crp crr crs crt csc csd cse csi cso csp csr css cst ctc ctd cte cti cto ctp ctr cts ctt dcc dcd dce dci dco dcp dcr dcs dct ddc ddd dde ddi ddo ddp ddr dds ddt de- dec ded dee dei deo dep der des det di- dic did die dii dio dip dir dis dit doc dod doe doi doo dop dor dos dot dpc dpd dpe dpi dpo dpp dpr dps dpt drc drd dre dri dro drp drr drs drt dsc dsd dse dsi dso dsp dsr dss dst dtc dtd dte dti dto dtp dtr dts dtt ec- ecc ecd ece eci eco ecr ecs ect ed- edc edd ede edi edo edp edr eds edt eec eed eee eeo eep eer ees eet eic eid eie eii eio eip eir eis eit eo- eoc eod eoe eoi eoo eop eor eos eot ep- epc epd epe epi epo epp epr eps ept erc erd ere eri ero erp err ers ert es- esc esd ese esi eso esp esr ess est etc etd ete eti eto etp etr ets ett i-d icc icd ice ici ico icp icr ics ict idc idd ide idi ido idp idr ids idt ie- iec ied iee iei iep ier ies iet iic iid iie iii iio iip iir iis iit io- ioc iod ioe ioi ioo iop ior ios iot ipc ipd ipe ipi ipo ipp ipr ips ipt ir- irc ird ire iri iro irp irr irs irt is- isc isd ise isi iso isp isr iss ist itc itd ite iti ito itp its itt o-i oc- occ ocd oci oco ocp ocr ocs oct odc odd ode odi odo odp odr ods odt oec oed oee oei oeo oep oer oes oet oic oid oie oii oio oip oir ois oit oo- ooc ood ooi ooo oop oor oos oot op- opc opd ope opi opo opp opr ops opt or- orc ord ore ori oro orp orr ors ort os- osc osd ose osi oso osp osr oss ost ot- otc otd ote oti oto otp otr ots ott p-p pcc pcd pce pci pco pcp pcr pcs pct pdc pdd pde pdi pdo pdp pdr pds pdt pec ped pee pei peo pep per pes pet pic pid pie pii pio pip pir pis pit poc pod poe poi poo pop por pos pot ppc ppd ppe ppi ppo ppp ppr pps ppt prc prd pre pri pro prp prr prs prt ps- psc psd pse psi pso psp psr pss pst pt- ptc ptd pte pti pto ptp ptr pts ptt rcc rcd rce rci rco rcp rcr rcs rct rdc rdd rde rdi rdo rdp rdr rds rdt re- rec red ree rei reo rep rer res ret ric rid rie rii rio rip rir ris rit roc rod roe roi roo rop ror ros rot rpc rpd rpe rpi rpo rpp rpr rps rpt rrc rrd rri rrp rrr rrs rrt rsc rsd rse rsi rso rsp rsr rss rst rtc rtd rte rti rto rtp rtr rts rtt scc scd sce sci sco scp scr scs sct sdc sdd sde sdi sdo sdp sdr sds sdt se- sec sed see sei seo sep ser ses set sic sid sie sii sio sip sir sis sit soc sod soe soi soo sop sor sos sot spc spd spe spi spo spp spr sps spt sr- src srd sre sri sro srp srr srs srt ss- ssc ssd sse ssi sso ssp ssr sss sst stc std ste sti sto stp str sts stt tcc tcd tce tci tco tcp tcr tcs tct tdc tdd tde tdi tdo tdp tdr tds tdt te- tec ted tee tei teo tep ter tes tet tic tid tie tii tio tip tir tis tit to- toc tod toe toi too top tor tos tot tpc tpd tpe tpi tpo tpp tpr tps tpt trc trd tre tri tro trp trr trs trt tsc tsd tse tsi tso tsp tsr tss tst ttc ttd tte tti tto ttp ttr tts ttt