-ic c-- ccc ccd cci cck cco ccr ccs cct cdc cdd cdi cdk cdo cdr cds cdt ci- cic cid cii cik cio cir cis cit ckc ckd cki cko cks ckt co- coc cod coi cok coo cor cos cot crc crd cri crk cro crr crs crt csc csd csi csk cso csr css cst ctc ctd cti ctk cto ctr cts ctt dcc dcd dci dck dco dcr dcs dct ddc ddd ddi ddk ddo ddr dds ddt di- dic did dii dik dio dir dis dit dkc dki dkk dko dkr dks dkt doc dod doi dok doo dor dos dot drc drd dri drk dro drr drs drt dsc dsd dsi dsk dso dsr dss dst dtc dtd dti dtk dto dtr dts dtt i-d icc icd ici ick ico icr ics ict idc idd idi idk ido idr ids idt iic iid iii iio iir iis iit ikc iki ikk iko ikr iks ikt io- ioc iod ioi ioo ior ios iot ir- irc ird iri irk iro irr irs irt is- isc isd isi isk iso isr iss ist itc itd iti itk ito its itt k-t kcc kcd kci kck kcr kcs kct kdc kdk kdo kdr kds kdt kic kid kii kik kio kir kis kit kkc kki kkk kkr kks kkt koc kod koi kok koo kor kos kot krc krd kri krk kro krr krs krt ksc ksd ksi ksk kso ksr kss kst ktc ktk kto ktr kts ktt o-i oc- occ ocd oci ock oco ocr ocs oct odc odd odi odo odr ods odt oic oid oii oik oio oir ois oit okc okd oki okk oko okr oks oo- ooc ood ooi ook ooo oor oos oot or- orc ord ori ork oro orr ors ort os- osc osd osi osk oso osr oss ost ot- otc otd oti otk oto otr ots ott rcc rcd rci rco rcr rcs rct rdc rdd rdi rdo rdr rds rdt ric rid rii rik rio rir ris rit rkc rkk rko rks rkt roc rod roi rok roo ror ros rot rrc rrd rri rrk rrr rrs rrt rsc rsd rsi rsk rso rsr rss rst rtc rtd rti rtk rto rtr rts rtt scc scd sci sck sco scr scs sct sdc sdd sdi sdk sdo sdr sds sdt sic sid sii sik sio sir sis sit sk- skc skd ski skk sko skr sks skt soc sod soi sok soo sor sos sot sr- src srd sri srk sro srr srs srt ss- ssc ssd ssi ssk sso ssr sss sst stc std sti stk sto str sts stt tcc tcd tci tck tco tcr tcs tct tdc tdd tdi tdk tdo tdr tds tdt tic tid tii tik tio tir tis tit tkc tkk tko tkr tks tkt to- toc tod toi tok too tor tos tot trc trd tri trk tro trr trs trt tsc tsd tsi tsk tso tsr tss tst ttc ttd tti ttk tto ttr tts ttt