-er b-u bbb bbe bbi bbl bbm bbr bbt bbu be- beb bee bei bel bem ber bet beu bi- bib bie bii bil bim bir bit biu blb ble bli bll blm blr blt blu bmb bme bmi bml bmm bmr bmt bmu brb bre bri brl brm brr brt bru btb bte bti btl btm btr btt btu bub bue bui bul bum bur but buu ebb ebe ebi ebl ebm ebr ebt ebu eeb eee eel eem eer eet eib eie eii eil eim eir eit eiu elb ele eli ell elm elr elt elu em- emb eme emi eml emm emr emt emu erb ere eri erl erm err ert eru etb ete eti etl etm etr ett etu eu- eub eue eui eul eur eut ibb ibe ibi ibl ibm ibr ibt ibu ie- iee iei iel iem ier iet iib iie iii iil iim iir iit iiu il- ilb ile ili ill ilm ilr ilt ilu im- imb ime imi iml imm imt imu ir- irb ire iri irl irm irr irt iru itb ite iti itl itm itt itu iu- iub iue iui ium iur iut lbb lbe lbi lbl lbm lbr lbt lbu leb lee lei lel lem ler let leu lib lie lii lil lim lir lit liu llb lle lli lll llm llr llt llu lmb lme lmi lml lmm lmr lmt lmu lrb lri lrm lrr lrt lru ltb lte lti ltl ltm ltr ltt ltu lub lue lui lul lum lur lut luu m-r mbb mbe mbi mbl mbm mbr mbt mbu meb mee mei mel mem mer met meu mi- mib mie mii mil mim mir mit miu mlb mle mli mll mlm mlr mlt mlu mmb mme mmi mml mmm mmr mmt mmu mrb mre mri mrl mrm mrr mrt mru mtb mte mti mtl mtm mtr mtt mtu mub mue mui mul mum mur mut muu rbb rbe rbi rbl rbm rbr rbt rbu re- reb ree rei rel rem rer ret reu rib rie rii ril rim rir rit rle rli rll rlm rlr rlt rlu rmb rme rmi rml rmm rmr rmt rrb rri rrl rrm rrr rrt rru rtb rte rti rtl rtm rtr rtt rtu rub rue rui rum rur rut ruu tbb tbe tbi tbl tbm tbr tbt tbu te- teb tee tei tel tem ter tet teu tib tie tii til tim tir tit tiu tle tli tll tlm tlr tlt tlu tmb tme tmi tml tmm tmr tmt tmu trb tre tri trl trm trr trt tru ttb tte tti ttl ttm ttr ttt ttu tub tue tui tul tum tur tut tuu ubb ube ubi ubl ubr ubt ubu ueb uee uei uel uem uer uet uib uie uii uil uim uir uit uiu ulb ule uli ull ulm ulr ult ulu um- umb ume umi uml umm umr umt umu ur- urb ure uri url urm urr urt uru utb ute uti utl utm utr utt utu uue uum uur uut uuu