-er b-u bbb bbd bbe bbh bbo bbr bbs bbu bdb bdd bde bdh bdo bdr bds bdu be- beb bed bee beh beo ber bes beu bhb bhd bhe bhh bho bhr bhs bhu bob bod boe boh boo bor bos bou brb brd bre brh bro brr brs bru bsb bsd bse bsh bso bsr bss bsu bub bud bue buh buo bur bus buu dbb dbd dbe dbh dbo dbr dbs dbu ddb ddd dde ddh ddo ddr dds ddu de- deb ded dee deh deo der des deu dh- dhb dhd dhe dhh dho dhr dhs dhu dob dod doe doh doo dor dos dou drb drd dre dro drr drs dru dsb dsd dse dsh dso dsr dss dsu dub dud due duh duo dur dus ebb ebd ebe ebh ebo ebr ebs ebu ed- edb edd ede edh edo edr eds edu eeb eed eee eeo eer ees ehb ehd ehe ehh eho ehr ehs ehu eo- eob eod eoe eoh eoo eor eos eou erb erd ere erh ero err ers eru es- esb esd ese esh eso esr ess esu eu- eub eud eue eur eus hbb hbd hbe hbh hbo hbr hbs hbu hdb hdd hde hdh hdo hdr hds hdu he- heb hed hee heh heo her hes heu hhb hhd hhe hhh hho hhr hhs hhu hob hod hoe hoh hoo hor hos hou hr- hrb hrd hre hrh hro hrr hrs hru hsb hsd hse hsh hsr hss hsu hub hud hue huh huo hur hus huu ob- obb obd obe obh obo obr obs obu odb odd ode odh odo odr ods odu oeb oed oee oeh oeo oer oes ohd ohe ohh oho ohr ohs ohu oo- oob ood ooh ooo oor oos or- orb ord ore orh oro orr ors oru os- osb osd ose osh oso osr oss osu ou- oud oue ouh ouo our ous rbb rbd rbe rbh rbo rbr rbs rbu rdb rdd rde rdh rdo rdr rds rdu re- reb red ree reh reo rer res reu rh- rhb rhd rhe rhh rho rhr rhs rhu rob rod roe roh roo ror ros rou rrb rrd rrh rrr rrs rru rsb rsd rse rsh rso rsr rss rsu rub rud rue ruh ruo rur rus ruu sbb sbd sbe sbh sbo sbr sbs sbu sdb sdd sde sdh sdo sdr sds sdu se- seb sed see seh seo ser ses seu sh- shb shd she shh sho shr shs shu sob sod soe soh soo sor sos sou sr- srb srd sre srh sro srr srs ss- ssb ssd sse ssh sso ssr sss ssu sub sud sue suh suo sur sus suu ubb ube ubh ubo ubr ubs ubu udb udd ude udo udr uds udu ueb ued uee ueh uer ues uhb uhd uhe uhh uho uhr uhs uhu uob uod uoe uoo uor uos ur- urb urd ure uro urr urs uru usb usd use ush uso usr uss usu uue uur uus uuu