-er b-u bbb bbd bbe bbo bbr bbu bdb bdd bde bdj bdo bdr bdu be- beb bed bee beo ber beu bjd bjj bjr bju bob bod boe boj boo bor bou brb brd bre brj bro brr bru bub bud bue buj buo bur buu dbb dbd dbe dbo dbr dbu ddb ddd dde ddo ddr ddu de- deb ded dee dej deo der deu dj- djb djd dje djo dob dod doe doj doo dor dou drb drd dre drj dro drr dru dub dud due duo dur ebb ebd ebe ebj ebo ebr ebu ed- edb edd ede edj edo edr edu eeb eed eee eeo eer ejd ejo eju eo- eob eod eoe eoo eor eou erb erd ere ero err eru eu- eub eud eue euj eur j-d jbj jbo jbr jbu jdb jde jdo jdr jeb jed jee jej jeo jer jeu jjb jjj jjr jju job jod joe joj joo jor jou jrb jro jrr jub jud jue juo jur ob- obb obd obe obj obo obr obu odb odd ode odo odr odu oeb oed oee oeo oer ojb ojd oje ojo oju oo- oob ood ooo oor or- orb ord ore oro orr oru ou- oud oue ouo our rbb rbd rbe rbo rbr rbu rdb rdd rde rdj rdo rdr rdu re- reb red ree reo rer reu rjr rob rod roe roj roo ror rou rrb rrd rrr rru rub rud rue ruo rur ruu ubb ube ubo ubr ubu udb udd ude udj udo udr udu ueb ued uee uer ujo uob uod uoe uoj uoo uor ur- urb urd ure uro urr uru uue uur uuu