-er -ic c-- ccc ccd cce cci cck ccn cco ccr ccs cct cdc cdd cde cdi cdk cdn cdo cdr cds cdt ce- cec ced cee cei cek cen ceo cer ces cet ci- cic cid cie cii cik cin cio cir cis cit ckc ckd cki cko cks ckt cn- cnc cnd cne cni cnn cno cnr cns cnt co- coc cod coe coi cok con coo cor cos cot crc crd cre cri crk crn cro crr crs crt csc csd cse csi csk csn cso csr css cst ctc ctd cte cti ctk ctn cto ctr cts ctt dcc dcd dce dci dck dcn dco dcr dcs dct ddc ddd dde ddi ddk ddn ddo ddr dds ddt de- dec ded dee dei dek den deo der des det di- dic did die dii dik din dio dir dis dit dkc dke dki dkk dko dkr dks dkt dnc dnd dne dni dnk dnn dno dnr dns dnt doc dod doe doi dok don doo dor dos dot drc drd dre dri drk drn dro drr drs drt dsc dsd dse dsi dsk dsn dso dsr dss dst dtc dtd dte dti dtk dtn dto dtr dts dtt ec- ecc ecd ece eci eck ecn eco ecr ecs ect ed- edc edd ede edi edk edn edo edr eds edt eec eed eee eek een eeo eer ees eet eic eid eie eii eik ein eio eir eis eit ekc ekd eke eki eko ekr eks ekt en- enc end ene eni enk enn eno enr ens ent eo- eoc eod eoe eoi eok eon eoo eor eos eot erc erd ere eri erk ern ero err ers ert es- esc esd ese esi esk esn eso esr ess est etc etd ete eti etk etn eto etr ets ett i-d icc icd ice ici ick icn ico icr ics ict idc idd ide idi idk idn ido idr ids idt ie- iec ied iee iei iek ien ier ies iet iic iid iie iii iin iio iir iis iit ikc ike iki ikk iko ikr iks ikt in- inc ind ine ini ink inn ino inr ins int io- ioc iod ioe ioi ion ioo ior ios iot ir- irc ird ire iri irk irn iro irr irs irt is- isc isd ise isi isk isn iso isr iss ist itc itd ite iti itk itn ito its itt k-t kcc kcd kce kci kck kcn kcr kcs kct kdc kde kdk kdo kdr kds kdt ke- kec ked kee kei kek ken keo ker kes ket kic kid kie kii kik kin kio kir kis kit kkc kke kki kkk kkn kkr kks kkt kn- knc knd kne kni knk knn kno knr knt koc kod koe koi kok kon koo kor kos kot krc krd kri krk krn kro krr krs krt ksc ksd kse ksi ksk ksn kso ksr kss kst ktc kte ktk ktn kto ktr kts ktt n-i ncc ncd nce nci nck ncn nco ncr ncs nct ndc ndd nde ndi ndk ndn ndo ndr nds ndt ne- nec ned nee nei nek nen neo ner nes net nic nid nie nii nik nin nio nir nis nit nkc nke nki nkk nkn nko nkr nks nkt nnc nne nni nnk nnn nno nns nnt no- noc nod noe noi nok non noo nor nos not nrc nrd nre nri nrk nrn nro nrr nrs nrt nsc nsd nse nsi nsk nsn nso nsr nss nst ntc ntd nte nti ntk ntn nto ntr nts ntt o-i oc- occ ocd oci ock ocn oco ocr ocs oct odc odd ode odi odn odo odr ods odt oec oed oee oei oen oeo oer oes oet oic oid oie oii oik oin oio oir ois oit okc okd oke oki okk oko okr oks on- onc ond one oni onk onn ono onr ons ont oo- ooc ood ooi ook oon ooo oor oos oot or- orc ord ore ori ork orn oro orr ors ort os- osc osd ose osi osk osn oso osr oss ost ot- otc otd ote oti otk otn oto otr ots ott rcc rcd rce rci rcn rco rcr rcs rct rdc rdd rde rdi rdn rdo rdr rds rdt re- rec red ree rei rek ren reo rer res ret ric rid rie rii rik rin rio rir ris rit rkc rke rkk rko rks rkt rnc rnd rni rnn rno rnr rns rnt roc rod roe roi rok ron roo ror ros rot rrc rrd rri rrk rrn rrr rrs rrt rsc rsd rse rsi rsk rsn rso rsr rss rst rtc rtd rte rti rtk rtn rto rtr rts rtt scc scd sce sci sck scn sco scr scs sct sdc sdd sde sdi sdk sdn sdo sdr sds sdt se- sec sed see sei sek sen seo ser ses set sic sid sie sii sik sin sio sir sis sit sk- skc skd ske ski skk sko skr sks skt snc snd sne sni snk snn sno snr sns snt soc sod soe soi sok son soo sor sos sot sr- src srd sre sri srk srn sro srr srs srt ss- ssc ssd sse ssi ssk ssn sso ssr sss sst stc std ste sti stk stn sto str sts stt tcc tcd tce tci tck tcn tco tcr tcs tct tdc tdd tde tdi tdk tdn tdo tdr tds tdt te- tec ted tee tei tek ten teo ter tes tet tic tid tie tii tik tin tio tir tis tit tkc tke tkk tko tkr tks tkt tnc tnd tne tni tnk tnn tno tnr tns tnt to- toc tod toe toi tok ton too tor tos tot trc trd tre tri trk trn tro trr trs trt tsc tsd tse tsi tsk tsn tso tsr tss tst ttc ttd tte tti ttk ttn tto ttr tts ttt