-er -ol c-- ccc ccd cce ccl cco ccr ccs ccu ccv cdc cdd cde cdl cdo cdr cds cdu cdv ce- cec ced cee cel ceo cer ces ceu cev cl- clc cld cle cll clo clr cls clu clv co- coc cod coe col coo cor cos cou cov crc crd cre crl cro crr crs cru crv csc csd cse csl cso csr css csu csv cuc cud cue cul cuo cur cus cuu cuv cvc cvd cve cvl cvo cvr cvs cvu cvv dcc dcd dce dcl dco dcr dcs dcu dcv ddc ddd dde ddl ddo ddr dds ddu de- dec ded dee del deo der des deu dev dl- dlc dld dle dll dlo dlr dls dlu dlv doc dod doe dol doo dor dos dou dov drc drd dre drl dro drr drs dru drv dsc dsd dse dsl dso dsr dss dsu dsv duc dud due dul duo dur dus duv dvc dvd dve dvl dvr dvs dvu ec- ecc ecd ece ecl eco ecr ecs ecu ecv ed- edc edd ede edl edo edr eds edu eec eed eee eel eeo eer ees eev elc eld ele ell elo elr els elu elv eo- eoc eod eoe eol eoo eor eos eou erc erd ere erl ero err ers eru erv es- esc esd ese esl eso esr ess esu esv eu- euc eud eue eul eur eus euv evc evd eve evl evo evr evs evv lcc lcd lce lcl lco lcr lcs lcu lcv ldc ldd lde ldl ldo ldr lds ldu ldv lec led lee lel leo ler les leu lev llc lld lle lll llo llr lls llu llv loc lod loe lol loo lor los lou lov lrc lrd lro lrr lrs lru lrv lsc lsd lse lsl lso lsr lss lsu lsv luc lud lue lul luo lur lus luu luv lvc lvd lve lvl lvr lvs lvv oc- occ ocd ocl oco ocr ocs ocu ocv odc odd ode odl odo odr ods odu odv oec oed oee oel oeo oer oes olc old ole oll olo ols olu oo- ooc ood ool ooo oor oos oov or- orc ord ore orl oro orr ors oru orv os- osc osd ose osl oso osr oss osu osv ou- ouc oud oue oul ouo our ous ov- ovc ovd ove ovl ovo ovs ovv rcc rcd rce rcl rco rcr rcs rcu rcv rdc rdd rde rdl rdo rdr rds rdu rdv re- rec red ree rel reo rer res reu rev rlc rld rle rll rlo rlr rls rlu roc rod roe rol roo ror ros rou rov rrc rrd rrl rrr rrs rru rsc rsd rse rsl rso rsr rss rsu rsv ruc rud rue ruo rur rus ruu ruv rvc rvd rve rvl rvo rvr rvs rvu rvv scc scd sce scl sco scr scs scu scv sdc sdd sde sdl sdo sdr sds sdu sdv se- sec sed see sel seo ser ses seu sev slc sld sle sll slo slr sls slu slv soc sod soe sol soo sor sos sou sov sr- src srd sre srl sro srr srs srv ss- ssc ssd sse ssl sso ssr sss ssu ssv suc sud sue sul suo sur sus suu suv svc svd sve svl svo svr svs svu svv ucc ucd uce ucl uco ucr ucs ucu ucv udc udd ude udl udo udr uds udu udv uec ued uee uel uer ues ulc uld ule ull ulo ulr uls ulu ulv uoc uod uoe uol uoo uor uos ur- urc urd ure url uro urr urs uru usc usd use usl uso usr uss usu usv uuc uue uur uus uuu uvc uve uvl uvo uvs uvu uvv v-e vcc vcd vce vcl vco vcr vcs vcu vdc vdd vde vdl vdo vdr vds vdu vdv vec ved vee vel veo ver ves veu vl- vlc vld vle vll vlo vls vlv voc vod voe vol voo vor vos vou vov vrc vrd vre vrr vrs vru vsc vsd vse vsl vso vsr vss vsu vsv vue vul vur vus vuv vvc vvo vvr vvs vvv