-er b-u bbb bbe bbi bbk bbl bbm bbr bbu be- beb bee bei bek bel bem ber beu bev bi- bib bie bii bik bil bim bir biu biv bkb bke bkk bkl bkm bkr bkv blb ble bli blk bll blm blr blu blv bmb bme bmi bmk bml bmm bmr bmu bmv brb bre bri brk brl brm brr bru brv bub bue bui buk bul bum bur buu bvb bve bvi bvk bvl bvm bvr bvu bvv ebb ebe ebi ebk ebl ebm ebr ebu ebv eeb eee eek eel eem eer eev eib eie eii eik eil eim eir eiu eiv ekb eke eki ekl ekr eku ekv elb ele eli elk ell elm elr elu elv em- emb eme emi emk eml emm emr emu emv erb ere eri erk erl erm err eru erv eu- eub eue eui eul eur euv evb eve evi evl evm evr evv i-v ibb ibe ibi ibk ibl ibm ibr ibu ibv ie- iee iei iek iel iem ier iev iib iie iii iil iim iir iiu ikb ike iki ikk ikl ikr iku ikv il- ilb ile ili ilk ill ilm ilr ilu ilv im- imb ime imi iml imm imu imv ir- irb ire iri irk irl irm irr iru irv iu- iub iue iui ium iur ivb ive ivi ivl ivr ivu ivv kbb kbe kbi kbk kbl kbm kbr kbu ke- keb kee kei kek kel kem ker kev kib kie kii kik kil kim kir kiu kiv kkb kke kki kkk kkl kkm kkr kku kkv kl- klb kli klm klr klu klv kmb kme kmi kmk kml kmm kmu kri krk krl krr kru krv kub kue kui kuk kul kum kur kuu kvb kvi kvk kvm kvr kvv lbb lbe lbi lbk lbl lbm lbr lbu lbv leb lee lei lek lel lem ler leu lev lib lie lii lik lil lim lir liu liv lkb lkl lkr llb lle lli llk lll llm llr llu llv lmb lme lmi lmk lml lmm lmr lmu lmv lrb lri lrk lrm lrr lru lrv lub lue lui luk lul lum lur luu luv lvb lve lvi lvl lvm lvr lvv m-r m-v mbb mbe mbi mbk mbl mbm mbr mbu mbv meb mee mei mek mel mem mer meu mev mi- mib mie mii mik mil mim mir miu miv mkb mke mkk mkl mkm mkr mku mkv mlb mle mli mlk mll mlm mlr mlu mlv mmb mme mmi mmk mml mmm mmr mmu mmv mrb mre mri mrk mrl mrm mrr mru mrv mub mue mui muk mul mum mur muu mvb mve mvi mvl mvm mvr mvv rbb rbe rbi rbk rbl rbm rbr rbu re- reb ree rei rek rel rem rer reu rev rib rie rii rik ril rim rir riv rkb rke rkk rkm rku rkv rle rli rll rlm rlr rlu rmb rme rmi rml rmm rmr rmv rrb rri rrk rrl rrm rrr rru rub rue rui ruk rum rur ruu ruv rvb rve rvi rvl rvm rvr rvu rvv ubb ube ubi ubk ubl ubr ubu ubv ueb uee uei uel uem uer uib uie uii uil uim uir uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulm ulr ulu ulv um- umb ume umi uml umm umr umu ur- urb ure uri urk url urm urr uru uue uum uur uuu uvb uve uvl uvm uvu uvv v-e vbi vbk vbl vbm vbr vbv veb vee vei vek vel vem ver veu vi- vib vie vii vik vil vim vir viu viv vkb vkm vl- vlb vle vlk vll vlm vlv vm- vmi vmm vmr vmu vrb vre vri vrk vrm vrr vru vue vuk vul vum vur vuv vvb vvi vvm vvr vvv