b-u bbb bbc bbd bbe bbh bbo bbu bcb bcc bcd bce bch bco bcu bdb bdc bdd bde bdh bdo bdu be- beb bec bed bee beh beo beu bhb bhc bhd bhe bhh bho bhu bob boc bod boe boh boo bou bub buc bud bue buh buo buu c-- cbb cbc cbd cbe cbh cbo cbu ccb ccc ccd cce cch cco ccu cdb cdc cdd cde cdh cdo cdu ce- ceb cec ced cee ceh ceo ceu ch- chb chc chd che chh cho chu co- cob coc cod coe coh coo cou cub cuc cud cue cuh cuo cuu dbb dbc dbd dbe dbh dbo dbu dcb dcc dcd dce dco dcu ddb ddc ddd dde ddh ddo ddu de- deb dec ded dee deh deo deu dh- dhb dhc dhd dhe dhh dho dhu dob doc dod doe doh doo dou dub duc dud due duh duo ebb ebc ebd ebe ebh ebo ebu ec- ecb ecc ecd ece ech eco ecu ed- edb edc edd ede edh edo edu eeb eec eed eee eeo ehb ehc ehd ehe ehh eho ehu eo- eob eoc eod eoe eoh eoo eou eu- eub euc eud eue hbb hbc hbd hbe hbh hbo hbu hcb hcc hcd hce hch hco hdb hdc hdd hde hdh hdo hdu he- heb hec hed hee heh heo heu hhb hhc hhd hhe hhh hho hhu hob hoc hod hoe hoh hoo hou hub huc hud hue huh huo huu ob- obb obc obd obe obh obo obu oc- ocb occ ocd och oco ocu odb odc odd ode odh odo odu oeb oec oed oee oeh oeo ohc ohd ohe ohh oho ohu oo- oob ooc ood ooh ooo ou- ouc oud oue ouh ouo ubb ubc ube ubh ubo ubu ucb ucc ucd uce uch uco ucu udb udc udd ude udo udu ueb uec ued uee ueh uhb uhc uhd uhe uhh uho uhu uob uoc uod uoe uoo uuc uue uuu