-ol c-- ccc ccf ccl ccn cco ccr ccs cfc cff cfl cfn cfo cfr cfs cl- clc clf cll cln clo clr cls cn- cnc cnf cnl cnn cno cnr cns co- coc cof col con coo cor cos crc crf crl crn cro crr crs csc csf csl csn cso csr css fcc fcf fcl fcn fco fcr fcs ffc fff ffl ffn ffo ffr ffs flc flf fll fln flo flr fls fnc fnf fnl fnn fnr fns foc fof fol fon foo for fos frc frf frl frn fro frr frs fsc fsf fsl fsn fso fsr fss lcc lcf lcl lcn lco lcr lcs lfc lff lfl lfn lfo lfr lfs llc llf lll lln llo llr lls lnc lnl lnn lno lnr lns loc lof lol lon loo lor los lrc lrf lrn lro lrr lrs lsc lsf lsl lsn lso lsr lss ncc ncf ncl ncn nco ncr ncs nfc nff nfl nfn nfo nfr nfs nlc nlf nll nln nlo nlr nls nnc nnf nnl nnn nno nns no- noc nof nol non noo nor nos nrc nrf nrl nrn nro nrr nrs nsc nsf nsl nsn nso nsr nss oc- occ ocf ocl ocn oco ocr ocs of- ofc off ofl ofn ofo ofr ofs olc olf oll oln olo ols on- onc onf onl onn ono onr ons oo- ooc oof ool oon ooo oor oos or- orc orf orl orn oro orr ors os- osc osf osl osn oso osr oss rcc rcf rcl rcn rco rcr rcs rfc rff rfl rfn rfo rfr rfs rlc rlf rll rln rlo rlr rls rnc rnn rno rnr rns roc rof rol ron roo ror ros rrc rrf rrl rrn rrr rrs rsc rsf rsl rsn rso rsr rss scc scf scl scn sco scr scs sfc sff sfl sfn sfo sfr sfs slc slf sll sln slo slr sls snc snf snl snn sno snr sns soc sof sol son soo sor sos sr- src srf srl srn sro srr srs ss- ssc ssf ssl ssn sso ssr sss