-er -ol c-- ccc ccd cce ccf ccl cco ccr ccs ccu cdc cdd cde cdf cdl cdo cdr cds cdu ce- cec ced cee cef cel ceo cer ces ceu cfc cfd cfe cff cfl cfo cfr cfs cfu cl- clc cld cle clf cll clo clr cls clu co- coc cod coe cof col coo cor cos cou crc crd cre crf crl cro crr crs cru csc csd cse csf csl cso csr css csu cuc cud cue cuf cul cuo cur cus cuu dcc dcd dce dcf dcl dco dcr dcs dcu ddc ddd dde ddf ddl ddo ddr dds ddu de- dec ded dee def del deo der des deu dfc dfd dfe dff dfl dfo dfr dfs dfu dl- dlc dld dle dlf dll dlo dlr dls dlu doc dod doe dof dol doo dor dos dou drc drd dre drl dro drr drs dru dsc dsd dse dsf dsl dso dsr dss dsu duc dud due duf dul duo dur dus ec- ecc ecd ece ecf ecl eco ecr ecs ecu ed- edc edd ede edf edl edo edr eds edu eec eed eee eef eel eeo eer ees ef- efc efd efe eff efl efo efr efs elc eld ele elf ell elo elr els elu eo- eoc eod eoe eof eol eoo eor eos eou erc erd ere erf erl ero err ers eru es- esc esd ese esf esl eso esr ess esu eu- euc eud eue euf eul eur eus fcc fcd fce fcf fcl fco fcr fcs fcu fdc fdd fde fdf fdl fdo fdr fds fdu fec fed fee fef fel feo fer fes feu ffc ffd ffe fff ffl ffo ffr ffs ffu flc fld fle flf fll flo flr fls flu foc foe fof fol foo for fos fou frc frd fre frf frl fro frr frs fru fsc fsd fse fsf fsl fso fsr fss fsu fud fue fuf ful fuo fur fus fuu lcc lcd lce lcf lcl lco lcr lcs lcu ldc ldd lde ldf ldl ldo ldr lds ldu lec led lee lef lel leo ler les leu lfc lfd lfe lff lfl lfo lfr lfs lfu llc lld lle llf lll llo llr lls llu loc lod loe lof lol loo lor los lou lrc lrd lrf lro lrr lrs lru lsc lsd lse lsf lsl lso lsr lss lsu luc lud lue luf lul luo lur lus luu oc- occ ocd ocf ocl oco ocr ocs ocu odc odd ode odf odl odo odr ods odu oec oed oee oef oel oeo oer oes of- ofc ofd ofe off ofl ofo ofr ofs ofu olc old ole olf oll olo ols olu oo- ooc ood oof ool ooo oor oos or- orc ord ore orf orl oro orr ors oru os- osc osd ose osf osl oso osr oss osu ou- ouc oud oue ouf oul ouo our ous rcc rcd rce rcf rcl rco rcr rcs rcu rdc rdd rde rdf rdl rdo rdr rds rdu re- rec red ree ref rel reo rer res reu rfc rfd rfe rff rfl rfo rfr rfs rfu rlc rld rle rlf rll rlo rlr rls rlu roc rod roe rof rol roo ror ros rou rrc rrd rrf rrl rrr rrs rru rsc rsd rse rsf rsl rso rsr rss rsu ruc rud rue ruf ruo rur rus ruu scc scd sce scf scl sco scr scs scu sdc sdd sde sdf sdl sdo sdr sds sdu se- sec sed see sef sel seo ser ses seu sfc sfd sfe sff sfl sfo sfr sfs sfu slc sld sle slf sll slo slr sls slu soc sod soe sof sol soo sor sos sou sr- src srd sre srf srl sro srr srs ss- ssc ssd sse ssf ssl sso ssr sss ssu suc sud sue suf sul suo sur sus suu ucc ucd uce ucf ucl uco ucr ucs ucu udc udd ude udf udl udo udr uds udu uec ued uee uef uel uer ues ufc ufd ufe uff ufl ufo ufr ufs ufu ulc uld ule ulf ull ulo ulr uls ulu uoc uod uoe uol uoo uor uos ur- urc urd ure urf url uro urr urs uru usc usd use usf usl uso usr uss usu uuc uue uur uus uuu