-er ddd dde ddk ddl ddm ddr dds ddu de- ded dee dek del dem der des deu dke dkk dkl dkm dkr dks dku dl- dld dle dlk dll dlm dlr dls dlu dmd dme dmk dml dmm dmr dms dmu drd dre drk drl drm drr drs dru dsd dse dsk dsl dsm dsr dss dsu dud due duk dul dum dur dus ed- edd ede edk edl edm edr eds edu eed eee eek eel eem eer ees ekd eke ekl ekr eks eku eld ele elk ell elm elr els elu em- emd eme emk eml emm emr ems emu erd ere erk erl erm err ers eru es- esd ese esk esl esm esr ess esu eu- eud eue eul eur eus kde kdk kdl kdm kdr kds kdu ke- ked kee kek kel kem ker kes kke kkk kkl kkm kkr kks kku kl- kld klm klr kls klu kmd kme kmk kml kmm kms kmu krd krk krl krr krs kru ksd kse ksk ksl ksm ksr kss ksu kud kue kuk kul kum kur kus kuu ldd lde ldk ldl ldm ldr lds ldu led lee lek lel lem ler les leu lkl lkr lks lld lle llk lll llm llr lls llu lmd lme lmk lml lmm lmr lms lmu lrd lrk lrm lrr lrs lru lsd lse lsk lsl lsm lsr lss lsu lud lue luk lul lum lur lus luu m-r mdd mde mdk mdl mdm mdr mds mdu med mee mek mel mem mer mes meu mkd mke mkk mkl mkm mkr mks mku mld mle mlk mll mlm mlr mls mlu mmd mme mmk mml mmm mmr mms mmu mrd mre mrk mrl mrm mrr mrs mru msd mse msk msl msm msr mss msu mud mue muk mul mum mur mus muu rdd rde rdl rdm rdr rds rdu re- red ree rek rel rem rer res reu rke rkk rkm rks rku rld rle rll rlm rlr rls rlu rmd rme rml rmm rmr rms rrd rrk rrl rrm rrr rrs rru rsd rse rsk rsl rsm rsr rss rsu rud rue ruk rum rur rus ruu sdd sde sdk sdl sdm sdr sds sdu se- sed see sek sel sem ser ses seu sk- skd ske skk skl skm skr sks sku sld sle slk sll slm slr sls slu smd sme smk sml smm smr sms smu sr- srd sre srk srl srm srr srs ss- ssd sse ssk ssl ssm ssr sss ssu sud sue suk sul sum sur sus suu udd ude udk udl udm udr uds udu ued uee uel uem uer ues uke ukk ukl ukr uku uld ule ulk ull ulm ulr uls ulu um- umd ume uml umm umr ums umu ur- urd ure urk url urm urr urs uru usd use usk usl usm usr uss usu uue uum uur uus uuu