-er -th b-u bbb bbc bbe bbh bbn bbr bbt bbu bcb bcc bce bch bcn bcr bct bcu be- beb bec bee beh ben ber bet beu bhb bhc bhe bhh bhr bht bhu bnb bnc bne bnn bnr bnt bnu brb bre brh brn brr brt bru btb btc bte bth btn btr btt btu bub buc bue buh bun bur but buu c-- cbb cbc cbe cbh cbn cbr cbt cbu ccb ccc cce cch ccn ccr cct ccu ce- ceb cec cee ceh cen cer cet ceu ch- chb chc che chh chn chr cht chu cn- cnb cnc cne cnh cnn cnr cnt cnu crb crc cre crh crn crr crt cru ctb ctc cte cth ctn ctr ctt ctu cub cuc cue cuh cun cur cut cuu ebb ebc ebe ebh ebn ebr ebt ebu ec- ecb ecc ece ech ecn ecr ect ecu eeb eec eee een eer eet ehb ehc ehe ehh ehn ehr eht ehu en- enb enc ene enh enn enr ent enu erb erc ere erh ern err ert eru etb etc ete eth etn etr ett etu eu- eub euc eue eun eur eut hbb hbc hbe hbh hbn hbr hbt hbu hcb hcc hce hch hcn hcr hct he- heb hec hee heh hen her het heu hhb hhc hhe hhh hhn hhr hht hhu hnb hnc hne hnh hnn hnt hnu hr- hrb hrc hre hrh hrn hrr hrt hru htb htc hte hth htn htr htt hub huc hue huh hun hur hut huu nbb nbc nbe nbn nbr nbt nbu ncb ncc nce nch ncn ncr nct ncu ne- neb nec nee neh nen ner net neu nhb nhc nhe nhh nhn nhr nht nhu nnb nnc nne nnh nnn nnt nnu nrb nrc nre nrn nrr nrt nru ntb ntc nte nth ntn ntr ntt ntu nub nuc nue nuh nun nur nut nuu rbb rbc rbe rbh rbn rbr rbt rbu rcb rcc rce rch rcn rcr rct rcu re- reb rec ree reh ren rer ret reu rh- rhb rhc rhe rhh rhn rhr rht rhu rnb rnc rnh rnn rnr rnt rnu rrb rrc rrh rrn rrr rrt rru rtb rtc rte rtn rtr rtt rtu rub ruc rue ruh run rur rut ruu tbb tbc tbe tbh tbn tbr tbt tbu tcb tcc tce tch tcn tcr tct tcu te- teb tec tee teh ten ter tet teu th- thb thc the thh thn thr tht thu tnb tnc tne tnh tnn tnr tnt trb trc tre trh trn trr trt tru ttb ttc tte tth ttn ttr ttt ttu tub tuc tue tuh tun tur tut tuu ubb ubc ube ubh ubn ubr ubt ubu ucb ucc uce uch ucn ucr uct ucu ueb uec uee ueh uen uer uet uhb uhc uhe uhh uhr uht uhu un- unb unc une unh unn unr unt unu ur- urb urc ure urn urr urt uru utb utc ute uth utn utr utt utu uuc uue uun uur uut uuu