-er b-u bbb bbc bbe bbh bbn bbr bbu bcb bcc bce bch bcn bcr bcu be- beb bec bee beh ben ber beu bhb bhc bhe bhh bhr bhu bnb bnc bne bnn bnr bnu brb bre brh brn brr bru bub buc bue buh bun bur buu c-- cbb cbc cbe cbh cbn cbr cbu ccb ccc cce cch ccn ccr ccu ce- ceb cec cee ceh cen cer ceu ch- chb chc che chh chn chr chu cn- cnb cnc cne cnh cnn cnr cnu crb crc cre crh crn crr cru cub cuc cue cuh cun cur cuu ebb ebc ebe ebh ebn ebr ebu ec- ecb ecc ece ech ecn ecr ecu eeb eec eee een eer ehb ehc ehe ehh ehn ehr ehu en- enb enc ene enh enn enr enu erb erc ere erh ern err eru eu- eub euc eue eun eur hbb hbc hbe hbh hbn hbr hbu hcb hcc hce hch hcn hcr he- heb hec hee heh hen her heu hhb hhc hhe hhh hhn hhr hhu hnb hnc hne hnh hnn hnu hr- hrb hrc hre hrh hrn hrr hru hub huc hue huh hun hur huu nbb nbc nbe nbn nbr nbu ncb ncc nce nch ncn ncr ncu ne- neb nec nee neh nen ner neu nhb nhc nhe nhh nhn nhr nhu nnb nnc nne nnh nnn nnu nrb nrc nre nrn nrr nru nub nuc nue nuh nun nur nuu rbb rbc rbe rbh rbn rbr rbu rcb rcc rce rch rcn rcr rcu re- reb rec ree reh ren rer reu rh- rhb rhc rhe rhh rhn rhr rhu rnb rnc rnh rnn rnr rnu rrb rrc rrh rrn rrr rru rub ruc rue ruh run rur ruu ubb ubc ube ubh ubn ubr ubu ucb ucc uce uch ucn ucr ucu ueb uec uee ueh uen uer uhb uhc uhe uhh uhr uhu un- unb unc une unh unn unr unu ur- urb urc ure urn urr uru uuc uue uun uur uuu