-ol c-- ccc ccf ccl cco ccr ccs cct ccx cfc cff cfl cfo cfr cfs cft cfx cl- clc clf cll clo clr cls clt clx co- coc cof col coo cor cos cot cox crc crf crl cro crr crs crt crx csc csf csl cso csr css cst csx ctc ctf ctl cto ctr cts ctt ctx cxc cxf cxl cxo cxr cxs cxt cxx fcc fcf fcl fco fcr fcs fct fcx ffc fff ffl ffo ffr ffs fft ffx flc flf fll flo flr fls flt flx foc fof fol foo for fos fot fox frc frf frl fro frr frs frt fsc fsf fsl fso fsr fss fst fsx ftc ftf ftl fto ftr fts ftt ftx fxr fxs fxt fxx lcc lcf lcl lco lcr lcs lct lcx lfc lff lfl lfo lfr lfs lft lfx llc llf lll llo llr lls llt loc lof lol loo lor los lot lox lrc lrf lro lrr lrs lrt lsc lsf lsl lso lsr lss lst ltc ltf ltl lto ltr lts ltt ltx lxc lxo lxr lxx oc- occ ocf ocl oco ocr ocs oct ocx of- ofc off ofl ofo ofr ofs oft ofx olc olf oll olo ols olt oo- ooc oof ool ooo oor oos oot oox or- orc orf orl oro orr ors ort orx os- osc osf osl oso osr oss ost osx ot- otc otf otl oto otr ots ott ox- oxc oxf oxo oxt oxx rcc rcf rcl rco rcr rcs rct rcx rfc rff rfl rfo rfr rfs rft rlc rlf rll rlo rlr rls rlt roc rof rol roo ror ros rot rox rrc rrf rrl rrr rrs rrt rsc rsf rsl rso rsr rss rst rsx rtc rtf rtl rto rtr rts rtt rtx rxr rxs scc scf scl sco scr scs sct scx sfc sff sfl sfo sfr sfs sft sfx slc slf sll slo slr sls slt slx soc sof sol soo sor sos sot sox sr- src srf srl sro srr srs srt srx ss- ssc ssf ssl sso ssr sss sst ssx stc stf stl sto str sts stt stx sxc sxl sxs sxt t-x tcc tcf tcl tco tcr tcs tct tcx tfc tff tfl tfo tfr tfs tft tfx tlc tlf tll tlo tlr tls tlt tlx to- toc tof tol too tor tos tot tox trc trf trl tro trr trs trt trx tsc tsf tsl tso tsr tss tst tsx ttc ttf ttl tto ttr tts ttt ttx txf txl txs txt xcf xcl xcr xcx xfl xfs xft xfx xlf xlr xls xlt xoc xof xoo xor xos xot xox xrc xrf xrt xrx xsc xsl xss xst xtc xtf xtr xts xtx xxl xxo xxx