b-u bbb bbd bbf bbm bbo bbr bbt bbu bdb bdd bdf bdm bdo bdr bdt bdu bfb bfd bff bfm bfo bfr bft bfu bmb bmd bmf bmm bmo bmr bmt bmu bob bod bof bom boo bor bot bou brb brd brf brm bro brr brt bru btb btd btf btm bto btr btt btu bub bud buf bum buo bur but buu dbb dbd dbf dbm dbo dbr dbt dbu ddb ddd ddf ddm ddo ddr ddt ddu dfb dfd dff dfm dfo dfr dft dfu dmb dmd dmf dmm dmo dmr dmt dmu dob dod dof dom doo dor dot dou drb drd drm dro drr drt dru dtb dtd dtf dtm dto dtr dtt dtu dub dud duf dum duo dur dut fbb fbd fbf fbm fbo fbr fbt fbu fdb fdd fdf fdm fdo fdr fdt fdu ffd fff ffm ffo ffr fft ffu fmb fmd fmf fmm fmo fmr fmt fmu fob fof fom foo for fot fou frb frd frf frm fro frr frt fru ftb ftd ftf ftm fto ftr ftt ftu fub fud fuf fum fuo fur fut fuu m-f m-o m-r mbb mbd mbf mbm mbo mbr mbt mbu mdb mdd mdf mdm mdo mdr mdt mdu mfb mfd mff mfm mfo mfr mft mfu mmb mmd mmf mmm mmo mmr mmt mmu mob mod mof mom moo mor mot mou mrb mrd mrf mrm mro mrr mrt mru mtb mtd mtf mtm mto mtr mtt mtu mub mud muf mum mur mut muu ob- obb obd obf obm obo obr obt obu odb odd odf odm odo odr odt odu of- ofb ofd off ofm ofo ofr oft ofu om- omb omd omf omm omo omr omt omu oo- oob ood oof oom ooo oor oot or- orb ord orf orm oro orr ort oru ot- otb otd otf otm oto otr ott otu ou- oud ouf oum ouo our out rbb rbd rbf rbm rbo rbr rbt rbu rdb rdd rdf rdm rdo rdr rdt rdu rfb rfd rff rfm rfo rfr rft rfu rmb rmd rmf rmm rmo rmr rmt rob rod rof rom roo ror rot rou rrb rrd rrf rrm rrr rrt rru rtb rtd rtf rtm rto rtr rtt rtu rub rud ruf rum ruo rur rut ruu tbb tbd tbf tbm tbo tbr tbt tbu tdb tdd tdf tdm tdo tdr tdt tdu tfb tfd tff tfm tfo tfr tft tfu tmb tmd tmf tmm tmo tmr tmt tmu to- tob tod tof tom too tor tot tou trb trd trf trm tro trr trt tru ttb ttd ttf ttm tto ttr ttt ttu tub tud tuf tum tuo tur tut tuu ubb ubf ubo ubr ubt ubu udb udd udf udm udo udr udt udu ufd uff ufm ufo ufr uft ufu um- umb umd umf umm umo umr umt umu uob uod uom uoo uor uot ur- urb urd urf urm uro urr urt uru utb utd utf utm uto utr utt utu uum uur uut uuu

bbbb bbdd bbdo bd-r bdrm bduf bftt bmdb bobb bobo bobu bodb bodo bodu bofd boff bofu bomb bomt bomu boob bood boof boom boor boot bor- bord borf borm boro borr bort boru botb botd boto bott boud bouf boum bour bout brdm brdo brdt brfm brfu brob brod brom broo bror brot brou brrm brrr brud brum brut btdt btob btor btrt bttb bubb bubo bubu budb budd budo budu buff bufo bufr bum- bumb bumf bur- burb burd burm buro burr burt buru but- buto butt d-bo dbfo dbtt dddd ddot ddub dfdt dfrf dftr dmbf dmdt dmft dmrb dmtf dobb dobu dod- dodd dodo doff domb domm domo doob dood doof doom door doot dord dorf dorm doro dorr dort doru dotd doto dott doub doud douf doum dour dout drob drod drof drom drot drou drub drum drut druu dtor dtot dub- dubb dubu dudd dudo dudu duff dufu dumb dumm duo- duro durt duru duur duut fbom fdom fdot ffff ffrr fftf fmod fobt fofo fomo fomt food foof foom foot for- forb ford form foro forr fort fotm foto fott foud four fout frob from frot frou frub frum ftub fubb fubu fudd fuff fufu fumo fuor fur- furm furo furr furt futo futu mbdb mbou mdbf mddm mdmf mdot mdud mfbm mfor mfou mftf mmdb mmdf mmfd mmff mmmd mmmm mmod mmor mmrf mobb mobo modd modo modu moff mofo mofu momo momu moob mood moor moot morb mord morf moro mort moru motb motd motm moto mott motu moud mouf mour mout mrbb mrbm mrdd mrmd mrtm mrtt mrud mtbd mtbo mtff mtom mtor mtrr mttr mubo mudd mudu muff mufu mumm mumo mumu murd muro murr murt muru muto mutt mutu muut obbo obdt obor obot obro obtd odbo oddd odmr odom odoo odor odot odou odtu odum odur ofdr off- offo offr offu ofor ombo ombu omdb omo- omoo omor omro omuo ooff oooo oord oort ootb orbb orbo orbu ordo ordu orff orfu ormo oro- orof orom oror orot orro orto orub orum otbd oto- otof otoo otor otro otto ottu otur ouff our- ouro ourt out- outb outo ouu- rbbb rbbr rdbm rmtu rob- robb robo robt robu rodd rodo roff rofo romb romd romm romo roob rood roof room roor root roro rort roru roto rotr rott roub roud rouf roum rout rrrr rrum rtbf rtdt rtfb rtfm rubb rubu rudd rudo ruff rufo ruft rumb rumm rumo rumt rurd ruro ruru ruto rutt rutu ruud t-mo tbrb tddb tdff tdor tfot tmbr tmou tmro tmtt tobo tobt tobu todd todo todt todu toff tofo toft tofu tomb tomm tomo tomt tood toof toom toor toot tord torf torm toro torr tort toru totd totm toto totr tott toum tour tout trfd trfm trfr trmb trmd trmu trod trom troo trot trou trtr trub trud trut truu ttbb ttff tttt tubb tubo tubr tubu tudu tuff tufm tufo tuft