-ic -ol c-- ccc ccf cci cck ccl cco ccr ccs cfc cff cfi cfk cfl cfo cfr cfs ci- cic cif cii cik cil cio cir cis ckc cki cko cks cl- clc clf cli clk cll clo clr cls co- coc cof coi cok col coo cor cos crc crf cri crk crl cro crr crs csc csf csi csk csl cso csr css fcc fcf fci fck fcl fco fcr fcs ffc fff ffi ffk ffl ffo ffr ffs fic fif fii fik fil fir fis fkc fkf fki fkk fkl flc flf fli fll flo flr fls foc fof foi fok fol foo for fos frc frf fri frk frl fro frr frs fsc fsf fsi fsk fsl fso fsr fss i-f icc icf ici ick icl ico icr ics ifc iff ifi ifl ifo ifr ifs iic iif iii iil iio iir iis ikc ikf iki ikk ikl iko ikr iks il- ilc ilf ili ilk ill ilo ilr ils io- ioc iof ioi iol ioo ior ios ir- irc irf iri irk irl iro irr irs is- isc isf isi isk isl iso isr iss kcc kci kck kcl kcr kcs kfc kff kfi kfo kfs kic kif kii kik kil kio kir kis kkc kki kkk kkl kkr kks kl- klc klf kli klo klr kls koc kof koi kok kol koo kor kos krc krf kri krk krl kro krr krs ksc ksf ksi ksk ksl kso ksr kss lcc lcf lci lck lcl lco lcr lcs lfc lff lfi lfk lfl lfo lfr lfs lic lif lii lik lil lio lir lis lkl lkr lks llc llf lli llk lll llo llr lls loc lof loi lok lol loo lor los lrc lrf lri lrk lro lrr lrs lsc lsf lsi lsk lsl lso lsr lss o-i oc- occ ocf oci ock ocl oco ocr ocs of- ofc off ofi ofl ofo ofr ofs oic oif oii oik oil oio oir ois okc oki okk okl oko okr oks olc olf oli olk oll olo ols oo- ooc oof ooi ook ool ooo oor oos or- orc orf ori ork orl oro orr ors os- osc osf osi osk osl oso osr oss rcc rcf rci rcl rco rcr rcs rfc rff rfi rfk rfl rfo rfr rfs ric rif rii rik ril rio rir ris rkc rkf rkk rko rks rlc rlf rli rll rlo rlr rls roc rof roi rok rol roo ror ros rrc rrf rri rrk rrl rrr rrs rsc rsf rsi rsk rsl rso rsr rss scc scf sci sck scl sco scr scs sfc sff sfi sfk sfl sfo sfr sfs sic sif sii sik sil sio sir sis sk- skc skf ski skk skl sko skr sks slc slf sli slk sll slo slr sls soc sof soi sok sol soo sor sos sr- src srf sri srk srl sro srr srs ss- ssc ssf ssi ssk ssl sso ssr sss