-er b-u bbb bbe bbi bbk bbl bbm bbr bbs bbt bbu be- beb bee bei bek bel bem ber bes bet beu bi- bib bie bii bik bil bim bir bis bit biu bkb bke bkk bkl bkm bkr bks bkt blb ble bli blk bll blm blr bls blt blu bmb bme bmi bmk bml bmm bmr bms bmt bmu brb bre bri brk brl brm brr brs brt bru bsb bse bsi bsk bsl bsm bsr bss bst bsu btb bte bti btk btl btm btr bts btt btu bub bue bui buk bul bum bur bus but buu ebb ebe ebi ebk ebl ebm ebr ebs ebt ebu eeb eee eek eel eem eer ees eet eib eie eii eik eil eim eir eis eit eiu ekb eke eki ekl ekr eks ekt eku elb ele eli elk ell elm elr els elt elu em- emb eme emi emk eml emm emr ems emt emu erb ere eri erk erl erm err ers ert eru es- esb ese esi esk esl esm esr ess est esu etb ete eti etk etl etm etr ets ett etu eu- eub eue eui eul eur eus eut ibb ibe ibi ibk ibl ibm ibr ibs ibt ibu ie- iee iei iek iel iem ier ies iet iib iie iii iil iim iir iis iit iiu ikb ike iki ikk ikl ikr iks ikt iku il- ilb ile ili ilk ill ilm ilr ils ilt ilu im- imb ime imi iml imm ims imt imu ir- irb ire iri irk irl irm irr irs irt iru is- isb ise isi isk isl ism isr iss ist isu itb ite iti itk itl itm its itt itu iu- iub iue iui ium iur ius iut k-t kbb kbe kbi kbk kbl kbm kbr kbs kbu ke- keb kee kei kek kel kem ker kes ket kib kie kii kik kil kim kir kis kit kiu kkb kke kki kkk kkl kkm kkr kks kkt kku kl- klb kli klm klr kls klt klu kmb kme kmi kmk kml kmm kms kmt kmu kri krk krl krr krs krt kru ksb kse ksi ksk ksl ksm ksr kss kst ksu ktb kte ktk ktl ktm ktr kts ktt ktu kub kue kui kuk kul kum kur kus kut kuu lbb lbe lbi lbk lbl lbm lbr lbs lbt lbu leb lee lei lek lel lem ler les let leu lib lie lii lik lil lim lir lis lit liu lkb lkl lkr lks lkt llb lle lli llk lll llm llr lls llt llu lmb lme lmi lmk lml lmm lmr lms lmt lmu lrb lri lrk lrm lrr lrs lrt lru lsb lse lsi lsk lsl lsm lsr lss lst lsu ltb lte lti ltk ltl ltm ltr lts ltt ltu lub lue lui luk lul lum lur lus lut luu m-r mbb mbe mbi mbk mbl mbm mbr mbs mbt mbu meb mee mei mek mel mem mer mes met meu mi- mib mie mii mik mil mim mir mis mit miu mkb mke mkk mkl mkm mkr mks mkt mku mlb mle mli mlk mll mlm mlr mls mlt mlu mmb mme mmi mmk mml mmm mmr mms mmt mmu mrb mre mri mrk mrl mrm mrr mrs mrt mru msb mse msi msk msl msm msr mss mst msu mtb mte mti mtk mtl mtm mtr mts mtt mtu mub mue mui muk mul mum mur mus mut muu rbb rbe rbi rbk rbl rbm rbr rbs rbt rbu re- reb ree rei rek rel rem rer res ret reu rib rie rii rik ril rim rir ris rit rkb rke rkk rkm rks rkt rku rle rli rll rlm rlr rls rlt rlu rmb rme rmi rml rmm rmr rms rmt rrb rri rrk rrl rrm rrr rrs rrt rru rsb rse rsi rsk rsl rsm rsr rss rst rsu rtb rte rti rtk rtl rtm rtr rts rtt rtu rub rue rui ruk rum rur rus rut ruu sbb sbe sbi sbk sbl sbm sbr sbs sbt sbu se- seb see sei sek sel sem ser ses set seu sib sie sii sik sil sim sir sis sit siu sk- skb ske ski skk skl skm skr sks skt sku slb sle sli slk sll slm slr sls slt slu smb sme smi smk sml smm smr sms smt smu sr- srb sre sri srk srl srm srr srs srt ss- ssb sse ssi ssk ssl ssm ssr sss sst ssu stb ste sti stk stl stm str sts stt stu sub sue sui suk sul sum sur sus sut suu tbb tbe tbi tbk tbl tbm tbr tbs tbt tbu te- teb tee tei tek tel tem ter tes tet teu tib tie tii tik til tim tir tis tit tiu tkb tke tkk tkl tkm tkr tks tkt tle tli tlk tll tlm tlr tls tlt tlu tmb tme tmi tmk tml tmm tmr tms tmt tmu trb tre tri trk trl trm trr trs trt tru tsb tse tsi tsk tsl tsm tsr tss tst tsu ttb tte tti ttk ttl ttm ttr tts ttt ttu tub tue tui tuk tul tum tur tus tut tuu ubb ube ubi ubk ubl ubr ubs ubt ubu ueb uee uei uel uem uer ues uet uib uie uii uil uim uir uis uit uiu ukb uke uki ukk ukl ukr uku ulb ule uli ulk ull ulm ulr uls ult ulu um- umb ume umi uml umm umr ums umt umu ur- urb ure uri urk url urm urr urs urt uru usb use usi usk usl usm usr uss ust usu utb ute uti utk utl utm utr uts utt utu uue uum uur uus uut uuu