-ic c-- ccc ccd ccf cci cck cco ccr ccs cct cdc cdd cdf cdi cdk cdo cdr cds cdt cfc cfd cff cfi cfk cfo cfr cfs cft ci- cic cid cif cii cik cio cir cis cit ckc ckd cki cko cks ckt co- coc cod cof coi cok coo cor cos cot crc crd crf cri crk cro crr crs crt csc csd csf csi csk cso csr css cst ctc ctd ctf cti ctk cto ctr cts ctt dcc dcd dcf dci dck dco dcr dcs dct ddc ddd ddf ddi ddk ddo ddr dds ddt dfc dfd dff dfi dfk dfo dfr dfs dft di- dic did dif dii dik dio dir dis dit dkc dki dkk dko dkr dks dkt doc dod dof doi dok doo dor dos dot drc drd dri drk dro drr drs drt dsc dsd dsf dsi dsk dso dsr dss dst dtc dtd dtf dti dtk dto dtr dts dtt fcc fcd fcf fci fck fco fcr fcs fct fdc fdd fdf fdi fdk fdo fdr fds fdt ffc ffd fff ffi ffk ffo ffr ffs fft fic fid fif fii fik fir fis fit fkc fkf fki fkk fkt foc fof foi fok foo for fos fot frc frd frf fri frk fro frr frs frt fsc fsd fsf fsi fsk fso fsr fss fst ftc ftd ftf fti ftk fto ftr fts ftt i-d i-f icc icd icf ici ick ico icr ics ict idc idd idf idi idk ido idr ids idt ifc ifd iff ifi ifo ifr ifs ift iic iid iif iii iio iir iis iit ikc ikf iki ikk iko ikr iks ikt io- ioc iod iof ioi ioo ior ios iot ir- irc ird irf iri irk iro irr irs irt is- isc isd isf isi isk iso isr iss ist itc itd itf iti itk ito its itt k-t kcc kcd kci kck kcr kcs kct kdc kdf kdk kdo kdr kds kdt kfc kfd kff kfi kfo kfs kic kid kif kii kik kio kir kis kit kkc kki kkk kkr kks kkt koc kod kof koi kok koo kor kos kot krc krd krf kri krk kro krr krs krt ksc ksd ksf ksi ksk kso ksr kss kst ktc ktf ktk kto ktr kts ktt o-i oc- occ ocd ocf oci ock oco ocr ocs oct odc odd odf odi odo odr ods odt of- ofc ofd off ofi ofo ofr ofs oft oic oid oif oii oik oio oir ois oit okc okd oki okk oko okr oks oo- ooc ood oof ooi ook ooo oor oos oot or- orc ord orf ori ork oro orr ors ort os- osc osd osf osi osk oso osr oss ost ot- otc otd otf oti otk oto otr ots ott rcc rcd rcf rci rco rcr rcs rct rdc rdd rdf rdi rdo rdr rds rdt rfc rfd rff rfi rfk rfo rfr rfs rft ric rid rif rii rik rio rir ris rit rkc rkf rkk rko rks rkt roc rod rof roi rok roo ror ros rot rrc rrd rrf rri rrk rrr rrs rrt rsc rsd rsf rsi rsk rso rsr rss rst rtc rtd rtf rti rtk rto rtr rts rtt scc scd scf sci sck sco scr scs sct sdc sdd sdf sdi sdk sdo sdr sds sdt sfc sfd sff sfi sfk sfo sfr sfs sft sic sid sif sii sik sio sir sis sit sk- skc skd skf ski skk sko skr sks skt soc sod sof soi sok soo sor sos sot sr- src srd srf sri srk sro srr srs srt ss- ssc ssd ssf ssi ssk sso ssr sss sst stc std stf sti stk sto str sts stt tcc tcd tcf tci tck tco tcr tcs tct tdc tdd tdf tdi tdk tdo tdr tds tdt tfc tfd tff tfi tfk tfo tfr tfs tft tic tid tif tii tik tio tir tis tit tkc tkk tko tkr tks tkt to- toc tod tof toi tok too tor tos tot trc trd trf tri trk tro trr trs trt tsc tsd tsf tsi tsk tso tsr tss tst ttc ttd ttf tti ttk tto ttr tts ttt