b-u bbb bbc bbd bbe bbh bbk bbm bbn bbu bcb bcc bcd bce bch bck bcm bcn bcu bdb bdc bdd bde bdh bdk bdm bdu be- beb bec bed bee beh bek bem ben beu bhb bhc bhd bhe bhh bhk bhm bhu bkb bkc bke bkk bkm bkn bmb bmc bmd bme bmh bmk bmm bmn bmu bnb bnc bnd bne bnk bnn bnu bub buc bud bue buh buk bum bun buu c-- cbb cbc cbd cbe cbh cbk cbm cbn cbu ccb ccc ccd cce cch cck ccm ccn ccu cdb cdc cdd cde cdh cdk cdm cdn cdu ce- ceb cec ced cee ceh cek cem cen ceu ch- chb chc chd che chh chk chm chn chu ckb ckc ckd ckh ckm cmb cmc cmd cme cmh cmk cmm cmn cmu cn- cnb cnc cnd cne cnh cnm cnn cnu cub cuc cud cue cuh cuk cum cun cuu dbb dbc dbd dbe dbh dbk dbm dbn dbu dcb dcc dcd dce dck dcm dcn dcu ddb ddc ddd dde ddh ddk ddm ddn ddu de- deb dec ded dee deh dek dem den deu dh- dhb dhc dhd dhe dhh dhk dhm dhu dkb dkc dke dkk dkm dku dmb dmc dmd dme dmh dmk dmm dmn dmu dnb dnc dnd dne dnh dnk dnm dnn dub duc dud due duh duk dum dun ebb ebc ebd ebe ebh ebk ebm ebn ebu ec- ecb ecc ecd ece ech eck ecm ecn ecu ed- edb edc edd ede edh edk edm edn edu eeb eec eed eee eek eem een ehb ehc ehd ehe ehh ehm ehn ehu ekb ekc ekd eke ekh eku em- emb emc emd eme emh emk emm emn emu en- enb enc end ene enh enk enm enn enu eu- eub euc eud eue eun hbb hbc hbd hbe hbh hbk hbm hbn hbu hcb hcc hcd hce hch hck hcm hcn hdb hdc hdd hde hdh hdk hdm hdn hdu he- heb hec hed hee heh hek hem hen heu hhb hhc hhd hhe hhh hhk hhm hhn hhu hkb hkd hkh hkk hkm hkn hku hmb hmc hmd hme hmh hmk hmm hmu hnb hnc hnd hne hnh hnk hnn hnu hub huc hud hue huh huk hum hun huu kbb kbc kbd kbe kbh kbk kbm kbn kbu kcb kcc kcd kce kch kck kcm kcn kcu kdb kdc kde kdh kdk kdm kdu ke- keb kec ked kee keh kek kem ken khe khh khk khm khn khu kkb kkc kke kkh kkk kkm kkn kku kmb kmc kmd kme kmh kmk kmm kmu kn- knc knd kne knk knm knn knu kub kuc kud kue kuh kuk kum kun kuu mbb mbc mbd mbe mbh mbk mbm mbu mc- mcb mcc mcd mce mch mck mcm mcn mcu mdb mdc mdd mde mdh mdk mdm mdn mdu meb mec med mee meh mek mem men meu mhc mhd mhh mhk mhm mhn mhu mkb mkc mkd mke mkh mkk mkm mkn mku mmb mmc mmd mme mmh mmk mmm mmn mmu mnb mnc mne mnk mnm mnn mnu mub muc mud mue muh muk mum mun muu nbb nbc nbd nbe nbk nbm nbn nbu ncb ncc ncd nce nch nck ncm ncn ncu ndb ndc ndd nde ndh ndk ndm ndn ndu ne- neb nec ned nee neh nek nem nen neu nhb nhc nhd nhe nhh nhk nhm nhn nhu nkc nke nkk nkm nkn nku nmb nmc nmd nme nmh nmk nmm nmn nmu nnb nnc nne nnh nnk nnm nnn nnu nub nuc nud nue nuh nuk num nun nuu ubb ubc ube ubh ubk ubn ubu ucb ucc ucd uce uch uck ucm ucn ucu udb udc udd ude udk udm udn udu ueb uec ued uee ueh uem uen uhb uhc uhd uhe uhh uhm uhu ukb ukc uke ukk ukn uku um- umb umc umd ume umh umm umn umu un- unb unc und une unh unk unm unn unu uuc uue uum uun uuu