-er b-u bbb bbe bbg bbm bbn bbr bbt bbu be- beb bee beg bem ben ber bet beu bez bgb bge bgg bgm bgn bgr bgt bgu bgz bmb bme bmg bmm bmn bmr bmt bmu bmz bnb bne bng bnn bnr bnt bnu bnz brb bre brg brm brn brr brt bru brz btb bte btg btm btn btr btt btu btz bub bue bug bum bun bur but buu buz bze bzn bzr bzu bzz ebb ebe ebg ebm ebn ebr ebt ebu eeb eee eeg eem een eer eet egb ege egg egm egn egr egt egu em- emb eme emg emm emn emr emt emu en- enb ene eng enm enn enr ent enu enz erb ere erg erm ern err ert eru erz etb ete etg etm etn etr ett etu etz eu- eub eue eug eun eur eut eze ezr ezz gbe gbg gbm gbn gbr gbt gbu gbz ge- geb gee geg gem gen ger get geu gez ggb ggg ggm ggn ggr ggt ggu ggz gmb gme gmg gmm gmn gmr gmt gmz gnb gne gnm gnn gnr gnt gnu grb gre grg grm grn grr grt gru gtb gte gtg gtm gtn gtr gtt gtu gu- gub gue gug gum gun gur gut guu guz gzr gzu m-r mbb mbe mbg mbm mbr mbt mbu meb mee meg mem men mer met meu mez mgb mge mgm mgn mgr mgt mgu mgz mmb mme mmg mmm mmn mmr mmt mmu mmz mnb mne mng mnm mnn mnr mnt mnu mnz mrb mre mrg mrm mrn mrr mrt mru mrz mtb mte mtg mtm mtn mtr mtt mtu mub mue mug mum mun mur mut muu mzb mzm mzn mzt nbb nbe nbg nbm nbn nbr nbt nbu ne- neb nee neg nem nen ner net neu nez ngb nge ngg ngm ngn ngt ngu nmb nme nmg nmm nmn nmr nmt nmu nmz nnb nne nng nnm nnn nnt nnu nnz nrb nre nrg nrm nrn nrr nrt nru nrz ntb nte ntg ntm ntn ntr ntt ntu ntz nub nue nug num nun nur nut nuu nzb nze nzg nzz rbb rbe rbg rbm rbn rbr rbt rbu re- reb ree reg rem ren rer ret reu rez rgb rge rgg rgn rgr rgt rmb rme rmg rmm rmn rmr rmt rnb rng rnm rnn rnr rnt rnu rnz rrb rrg rrm rrn rrr rrt rru rtb rte rtg rtm rtn rtr rtt rtu rtz rub rue rug rum run rur rut ruu ruz rzb rze rzm tbb tbe tbg tbm tbn tbr tbt tbu tbz te- teb tee teg tem ten ter tet teu tez tgb tge tgg tgm tgn tgr tgt tgu tgz tmb tme tmg tmm tmn tmr tmt tmu tmz tnb tne tng tnm tnn tnr tnt tnz trb tre trg trm trn trr trt tru trz ttb tte ttg ttm ttn ttr ttt ttu tub tue tug tum tun tur tut tuu tuz tze tzu ubb ube ubg ubn ubr ubt ubu ueb uee ueg uem uen uer uet ugb uge ugg ugm ugn ugr ugt ugu um- umb ume umg umm umn umr umt umu un- unb une ung unm unn unr unt unu ur- urb ure urg urm urn urr urt uru urz utb ute utm utn utr utt utu utz uue uug uum uun uur uut uuu uzb uzu z-g zbb zbm zbr zbt zeb zee zem zen zer zet zez zgb zgg zmb zmm zmt zne znn zte ztm ztr zub zug zum zun zur zut zuz zzr zzt zzz