-er b-u bbb bbd bbe bbo bbr bbt bbu bbw bdb bdd bde bdo bdr bdt bdu bdw be- beb bed bee beo ber bet beu bew bob bod boe boo bor bot bou bow brb brd bre bro brr brt bru brw btb btd bte bto btr btt btu btw bub bud bue buo bur but buu buw bwb bwd bwo bwr bwu dbb dbd dbe dbo dbr dbt dbu ddb ddd dde ddo ddr ddt ddu ddw de- deb ded dee deo der det deu dew dob dod doe doo dor dot dou dow drb drd dre dro drr drt dru drw dtb dtd dte dto dtr dtt dtu dtw dub dud due duo dur dut dwb dwe dwo dwr dwt dwu dww ebb ebd ebe ebo ebr ebt ebu ebw ed- edb edd ede edo edr edt edu edw eeb eed eee eeo eer eet eew eo- eob eod eoe eoo eor eot eou eow erb erd ere ero err ert eru erw etb etd ete eto etr ett etu etw eu- eub eud eue eur eut ewb ewd ewe ewo ewr ewt ewu eww ob- obb obd obe obo obr obt obu obw odb odd ode odo odr odt odu oeb oed oee oeo oer oet oo- oob ood ooo oor oot oow or- orb ord ore oro orr ort oru ot- otb otd ote oto otr ott otu otw ou- oud oue ouo our out owb owd owe owo owt owu oww rbb rbd rbe rbo rbr rbt rbu rbw rdb rdd rde rdo rdr rdt rdu re- reb red ree reo rer ret reu rew rob rod roe roo ror rot rou row rrb rrd rrr rrt rru rtb rtd rte rto rtr rtt rtu rtw rub rud rue ruo rur rut ruu rwb rwd rwe rwr rwu tbb tbd tbe tbo tbr tbt tbu tdb tdd tde tdo tdr tdt tdu tdw te- teb ted tee teo ter tet teu tew to- tob tod toe too tor tot tou tow trb trd tre tro trr trt tru trw ttb ttd tte tto ttr ttt ttu ttw tub tud tue tuo tur tut tuu twb twd twe two twr twt twu tww ubb ube ubo ubr ubt ubu ubw udb udd ude udo udr udt udu ueb ued uee uer uet uew uob uod uoe uoo uor uot uow ur- urb urd ure uro urr urt uru urw utb utd ute uto utr utt utu uue uur uut uuu uwb uwe uwr uww wbb wbd wbe wbo wbr wbt wbw wdb wdr wdt wdu web wed wee weo wer wet wew wob wod woe woo wor wot wou wow wr- wrd wre wro wrr wrt wru wrw wtb wtd wto wtr wtt wtu wtw wub wud wue wuo wur wut wwd wwe wwo wwt wwu www