-er b-u bbb bbe bbg bbi bbk bbl bbm bbr bbu be- beb bee beg bei bek bel bem ber beu bgb bge bgg bgi bgk bgl bgm bgr bgu bi- bib bie big bii bik bil bim bir biu bkb bke bkg bkk bkl bkm bkr blb ble blg bli blk bll blm blr blu bmb bme bmg bmi bmk bml bmm bmr bmu brb bre brg bri brk brl brm brr bru bub bue bug bui buk bul bum bur buu ebb ebe ebg ebi ebk ebl ebm ebr ebu eeb eee eeg eek eel eem eer egb ege egg egi egl egm egr egu eib eie eig eii eik eil eim eir eiu ekb eke ekg eki ekl ekr eku elb ele elg eli elk ell elm elr elu em- emb eme emg emi emk eml emm emr emu erb ere erg eri erk erl erm err eru eu- eub eue eug eui eul eur gbe gbg gbi gbk gbl gbm gbr gbu ge- geb gee geg gei gek gel gem ger geu ggb ggg ggi ggm ggr ggu gib gie gig gii gik gil gim gir giu gkb gkm glb gle glg gli glk gll glm glr glu gmb gme gmg gmi gml gmm gmr grb gre grg gri grk grl grm grr gru gu- gub gue gug gui guk gul gum gur guu ibb ibe ibg ibi ibk ibl ibm ibr ibu ie- iee ieg iei iek iel iem ier igb ige igg igi igk igl igm igr igu iib iie iii iil iim iir iiu ikb ike iki ikk ikl ikr iku il- ilb ile ilg ili ilk ill ilm ilr ilu im- imb ime img imi iml imm imu ir- irb ire irg iri irk irl irm irr iru iu- iub iue iug iui ium iur kbb kbe kbi kbk kbl kbm kbr kbu ke- keb kee keg kei kek kel kem ker kgb kgi kgl kgm kgu kib kie kig kii kik kil kim kir kiu kkb kke kki kkk kkl kkm kkr kku kl- klb klg kli klm klr klu kmb kme kmg kmi kmk kml kmm kmu krg kri krk krl krr kru kub kue kug kui kuk kul kum kur kuu lbb lbe lbg lbi lbk lbl lbm lbr lbu leb lee leg lei lek lel lem ler leu lgb lge lgg lgi lgk lgl lgm lgr lgu lib lie lig lii lik lil lim lir liu lkb lkg lkl lkr llb lle llg lli llk lll llm llr llu lmb lme lmg lmi lmk lml lmm lmr lmu lrb lrg lri lrk lrm lrr lru lub lue lug lui luk lul lum lur luu m-r mbb mbe mbg mbi mbk mbl mbm mbr mbu meb mee meg mei mek mel mem mer meu mgb mge mgi mgk mgl mgm mgr mgu mi- mib mie mig mii mik mil mim mir miu mkb mke mkg mkk mkl mkm mkr mku mlb mle mlg mli mlk mll mlm mlr mlu mmb mme mmg mmi mmk mml mmm mmr mmu mrb mre mrg mri mrk mrl mrm mrr mru mub mue mug mui muk mul mum mur muu rbb rbe rbg rbi rbk rbl rbm rbr rbu re- reb ree reg rei rek rel rem rer reu rgb rge rgg rgi rgk rgr rib rie rig rii rik ril rim rir rkb rke rkg rkk rkm rku rle rlg rli rll rlm rlr rlu rmb rme rmg rmi rml rmm rmr rrb rrg rri rrk rrl rrm rrr rru rub rue rug rui ruk rum rur ruu ubb ube ubg ubi ubk ubl ubr ubu ueb uee ueg uei uel uem uer ugb uge ugg ugi ugk ugl ugm ugr ugu uib uie uig uii uil uim uir uiu ukb uke uki ukk ukl ukr uku ulb ule ulg uli ulk ull ulm ulr ulu um- umb ume umg umi uml umm umr umu ur- urb ure urg uri urk url urm urr uru uue uug uum uur uuu