c-- ccc ccf ccm ccn cco ccr cct cfc cff cfm cfn cfo cfr cft cmc cmf cmm cmn cmo cmr cmt cn- cnc cnf cnm cnn cno cnr cnt co- coc cof com con coo cor cot crc crf crm crn cro crr crt ctc ctf ctm ctn cto ctr ctt fcc fcf fcm fcn fco fcr fct ffc fff ffm ffn ffo ffr fft fmc fmf fmm fmn fmo fmr fmt fnc fnf fnm fnn fnr fnt foc fof fom fon foo for fot frc frf frm frn fro frr frt ftc ftf ftm ftn fto ftr ftt m-f m-o m-r mc- mcc mcf mcm mcn mco mcr mct mfc mff mfm mfn mfo mfr mft mmc mmf mmm mmn mmo mmr mmt mnc mnf mnm mnn mno mnr mnt moc mof mom mon moo mor mot mrc mrf mrm mrn mro mrr mrt mtc mtf mtm mtn mto mtr mtt ncc ncf ncm ncn nco ncr nct nfc nff nfn nfo nfr nft nmc nmm nmn nmo nmr nmt nnc nnf nnm nnn nno nnt no- noc nof nom non noo nor not nrc nrf nrm nrn nro nrr nrt ntc ntf ntm ntn nto ntr ntt oc- occ ocf ocm ocn oco ocr oct of- ofc off ofm ofn ofo ofr oft om- omc omf omm omn omo omr omt on- onc onf onn ono onr ont oo- ooc oof oom oon ooo oor oot or- orc orf orm orn oro orr ort ot- otc otf otm otn oto otr ott rcc rcf rcm rcn rco rcr rct rfc rff rfm rfn rfo rfr rft rmc rmf rmm rmn rmo rmr rmt rnc rnm rnn rno rnr rnt roc rof rom ron roo ror rot rrc rrf rrm rrn rrr rrt rtc rtf rtm rtn rto rtr rtt tcc tcf tcm tcn tco tcr tct tfc tff tfm tfn tfo tfr tft tmc tmf tmm tmn tmo tmr tmt tnc tnf tnm tnn tno tnr tnt to- toc tof tom ton too tor tot trc trf trm trn tro trr trt ttc ttf ttm ttn tto ttr ttt