-er b-u bbb bbe bbg bbn bbr bbt bbu be- beb bee beg ben ber bet beu bgb bge bgg bgn bgr bgt bgu bnb bne bng bnn bnr bnt bnu brb bre brg brn brr brt bru btb bte btg btn btr btt btu bub bue bug bun bur but buu ebb ebe ebg ebn ebr ebt ebu eeb eee eeg een eer eet egb ege egg egn egr egt egu en- enb ene eng enn enr ent enu erb ere erg ern err ert eru etb ete etg etn etr ett etu eu- eub eue eug eun eur eut gbe gbg gbn gbr gbt gbu ge- geb gee geg gen ger get geu ggb ggg ggn ggr ggt ggu gnb gne gnn gnr gnt gnu grb gre grg grn grr grt gru gtb gte gtg gtn gtr gtt gtu gu- gub gue gug gun gur gut guu nbb nbe nbg nbn nbr nbt nbu ne- neb nee neg nen ner net neu ngb nge ngg ngn ngt ngu nnb nne nng nnn nnt nnu nrb nre nrg nrn nrr nrt nru ntb nte ntg ntn ntr ntt ntu nub nue nug nun nur nut nuu rbb rbe rbg rbn rbr rbt rbu re- reb ree reg ren rer ret reu rgb rge rgg rgn rgr rgt rnb rng rnn rnr rnt rnu rrb rrg rrn rrr rrt rru rtb rte rtg rtn rtr rtt rtu rub rue rug run rur rut ruu tbb tbe tbg tbn tbr tbt tbu te- teb tee teg ten ter tet teu tgb tge tgg tgn tgr tgt tgu tnb tne tng tnn tnr tnt trb tre trg trn trr trt tru ttb tte ttg ttn ttr ttt ttu tub tue tug tun tur tut tuu ubb ube ubg ubn ubr ubt ubu ueb uee ueg uen uer uet ugb uge ugg ugn ugr ugt ugu un- unb une ung unn unr unt unu ur- urb ure urg urn urr urt uru utb ute utn utr utt utu uue uug uun uur uut uuu