-er b-u bbb bbd bbe bbi bbk bbl bbm bbr bbs bbu bdb bdd bde bdi bdk bdl bdm bdr bds bdu be- beb bed bee bei bek bel bem ber bes beu bi- bib bid bie bii bik bil bim bir bis biu bkb bke bkk bkl bkm bkr bks blb bld ble bli blk bll blm blr bls blu bmb bmd bme bmi bmk bml bmm bmr bms bmu brb brd bre bri brk brl brm brr brs bru bsb bsd bse bsi bsk bsl bsm bsr bss bsu bub bud bue bui buk bul bum bur bus buu dbb dbd dbe dbi dbk dbl dbm dbr dbs dbu ddb ddd dde ddi ddk ddl ddm ddr dds ddu de- deb ded dee dei dek del dem der des deu di- dib did die dii dik dil dim dir dis diu dkb dke dki dkk dkl dkm dkr dks dku dl- dlb dld dle dli dlk dll dlm dlr dls dlu dmb dmd dme dmi dmk dml dmm dmr dms dmu drb drd dre dri drk drl drm drr drs dru dsb dsd dse dsi dsk dsl dsm dsr dss dsu dub dud due dui duk dul dum dur dus ebb ebd ebe ebi ebk ebl ebm ebr ebs ebu ed- edb edd ede edi edk edl edm edr eds edu eeb eed eee eek eel eem eer ees eib eid eie eii eik eil eim eir eis eiu ekb ekd eke eki ekl ekr eks eku elb eld ele eli elk ell elm elr els elu em- emb emd eme emi emk eml emm emr ems emu erb erd ere eri erk erl erm err ers eru es- esb esd ese esi esk esl esm esr ess esu eu- eub eud eue eui eul eur eus i-d ibb ibd ibe ibi ibk ibl ibm ibr ibs ibu idb idd ide idi idk idl idm idr ids idu ie- ied iee iei iek iel iem ier ies iib iid iie iii iil iim iir iis iiu ikb ike iki ikk ikl ikr iks iku il- ilb ild ile ili ilk ill ilm ilr ils ilu im- imb imd ime imi iml imm ims imu ir- irb ird ire iri irk irl irm irr irs iru is- isb isd ise isi isk isl ism isr iss isu iu- iub iud iue iui ium iur ius kbb kbd kbe kbi kbk kbl kbm kbr kbs kbu kdb kde kdk kdl kdm kdr kds kdu ke- keb ked kee kei kek kel kem ker kes kib kid kie kii kik kil kim kir kis kiu kkb kke kki kkk kkl kkm kkr kks kku kl- klb kld kli klm klr kls klu kmb kmd kme kmi kmk kml kmm kms kmu krd kri krk krl krr krs kru ksb ksd kse ksi ksk ksl ksm ksr kss ksu kub kud kue kui kuk kul kum kur kus kuu lbb lbd lbe lbi lbk lbl lbm lbr lbs lbu ldb ldd lde ldi ldk ldl ldm ldr lds ldu leb led lee lei lek lel lem ler les leu lib lid lie lii lik lil lim lir lis liu lkb lkl lkr lks llb lld lle lli llk lll llm llr lls llu lmb lmd lme lmi lmk lml lmm lmr lms lmu lrb lrd lri lrk lrm lrr lrs lru lsb lsd lse lsi lsk lsl lsm lsr lss lsu lub lud lue lui luk lul lum lur lus luu m-r mbb mbd mbe mbi mbk mbl mbm mbr mbs mbu mdb mdd mde mdi mdk mdl mdm mdr mds mdu meb med mee mei mek mel mem mer mes meu mi- mib mid mie mii mik mil mim mir mis miu mkb mkd mke mkk mkl mkm mkr mks mku mlb mld mle mli mlk mll mlm mlr mls mlu mmb mmd mme mmi mmk mml mmm mmr mms mmu mrb mrd mre mri mrk mrl mrm mrr mrs mru msb msd mse msi msk msl msm msr mss msu mub mud mue mui muk mul mum mur mus muu rbb rbd rbe rbi rbk rbl rbm rbr rbs rbu rdb rdd rde rdi rdl rdm rdr rds rdu re- reb red ree rei rek rel rem rer res reu rib rid rie rii rik ril rim rir ris rkb rke rkk rkm rks rku rld rle rli rll rlm rlr rls rlu rmb rmd rme rmi rml rmm rmr rms rrb rrd rri rrk rrl rrm rrr rrs rru rsb rsd rse rsi rsk rsl rsm rsr rss rsu rub rud rue rui ruk rum rur rus ruu sbb sbd sbe sbi sbk sbl sbm sbr sbs sbu sdb sdd sde sdi sdk sdl sdm sdr sds sdu se- seb sed see sei sek sel sem ser ses seu sib sid sie sii sik sil sim sir sis siu sk- skb skd ske ski skk skl skm skr sks sku slb sld sle sli slk sll slm slr sls slu smb smd sme smi smk sml smm smr sms smu sr- srb srd sre sri srk srl srm srr srs ss- ssb ssd sse ssi ssk ssl ssm ssr sss ssu sub sud sue sui suk sul sum sur sus suu ubb ube ubi ubk ubl ubr ubs ubu udb udd ude udi udk udl udm udr uds udu ueb ued uee uei uel uem uer ues uib uid uie uii uil uim uir uis uiu ukb uke uki ukk ukl ukr uku ulb uld ule uli ulk ull ulm ulr uls ulu um- umb umd ume umi uml umm umr ums umu ur- urb urd ure uri urk url urm urr urs uru usb usd use usi usk usl usm usr uss usu uue uum uur uus uuu