-ic c-- ccc ccd cce cci cck cco ccp ccs cct cdc cdd cde cdi cdk cdo cdp cds cdt ce- cec ced cee cei cek ceo cep ces cet ci- cic cid cie cii cik cio cip cis cit ckc ckd cki cko cks ckt co- coc cod coe coi cok coo cop cos cot cpc cpd cpe cpi cpk cpo cpp cps cpt csc csd cse csi csk cso csp css cst ctc ctd cte cti ctk cto ctp cts ctt dcc dcd dce dci dck dco dcp dcs dct ddc ddd dde ddi ddk ddo ddp dds ddt de- dec ded dee dei dek deo dep des det di- dic did die dii dik dio dip dis dit dkc dke dki dkk dko dkp dks dkt doc dod doe doi dok doo dop dos dot dpc dpd dpe dpi dpk dpo dpp dps dpt dsc dsd dse dsi dsk dso dsp dss dst dtc dtd dte dti dtk dto dtp dts dtt ec- ecc ecd ece eci eck eco ecs ect ed- edc edd ede edi edk edo edp eds edt eec eed eee eek eeo eep ees eet eic eid eie eii eik eio eip eis eit ekc ekd eke eki eko ekp eks ekt eo- eoc eod eoe eoi eok eoo eop eos eot ep- epc epd epe epi epo epp eps ept es- esc esd ese esi esk eso esp ess est etc etd ete eti etk eto etp ets ett i-d icc icd ice ici ick ico icp ics ict idc idd ide idi idk ido idp ids idt ie- iec ied iee iei iek iep ies iet iic iid iie iii iio iip iis iit ikc ike iki ikk iko iks ikt io- ioc iod ioe ioi ioo iop ios iot ipc ipd ipe ipi ipo ipp ips ipt is- isc isd ise isi isk iso isp iss ist itc itd ite iti itk ito itp its itt k-t kcc kcd kce kci kck kcp kcs kct kdc kde kdk kdo kdp kds kdt ke- kec ked kee kei kek keo kep kes ket kic kid kie kii kik kio kip kis kit kkc kke kki kkk kkp kks kkt koc kod koe koi kok koo kop kos kot kpc kpd kpe kpi kpk kpo kpp kps kpt ksc ksd kse ksi ksk kso ksp kss kst ktc kte ktk kto ktp kts ktt o-i oc- occ ocd oci ock oco ocp ocs oct odc odd ode odi odo odp ods odt oec oed oee oei oeo oep oes oet oic oid oie oii oik oio oip ois oit okc okd oke oki okk oko okp oks oo- ooc ood ooi ook ooo oop oos oot op- opc opd ope opi opk opo opp ops opt os- osc osd ose osi osk oso osp oss ost ot- otc otd ote oti otk oto otp ots ott p-p pcc pcd pce pci pck pco pcp pcs pct pdc pdd pde pdi pdk pdo pdp pds pdt pec ped pee pei pek peo pep pes pet pic pid pie pii pik pio pip pis pit pkc pkd pke pki pko pkp pks pkt poc pod poe poi pok poo pop pos pot ppc ppd ppe ppi ppk ppo ppp pps ppt ps- psc psd pse psi psk pso psp pss pst pt- ptc ptd pte pti ptk pto ptp pts ptt scc scd sce sci sck sco scp scs sct sdc sdd sde sdi sdk sdo sdp sds sdt se- sec sed see sei sek seo sep ses set sic sid sie sii sik sio sip sis sit sk- skc skd ske ski skk sko skp sks skt soc sod soe soi sok soo sop sos sot spc spd spe spi spk spo spp sps spt ss- ssc ssd sse ssi ssk sso ssp sss sst stc std ste sti stk sto stp sts stt tcc tcd tce tci tck tco tcp tcs tct tdc tdd tde tdi tdk tdo tdp tds tdt te- tec ted tee tei tek teo tep tes tet tic tid tie tii tik tio tip tis tit tkc tke tkk tko tkp tks tkt to- toc tod toe toi tok too top tos tot tpc tpd tpe tpi tpk tpo tpp tps tpt tsc tsd tse tsi tsk tso tsp tss tst ttc ttd tte tti ttk tto ttp tts ttt