-hou bbbb bboy bbyo bhor bhot bhoy bhrt bhur bhut bhuu bobb bobo bobu boby boho bohr boht bohu bohy boob booh boor boot bor- borh boro borr bort boru bory botb both boto bott boty bouh bour bout bouy boyo brob broh broo bror brot brou brrr bruh brut bry- bryo btob btor btrt btry bttb bubb bubo bubu buho buhr buhy buoy bur- burb burh buro burr burt buru bury but- buto butt buty buyo buyu byob byrt byth hbtu hhhh hobo hoby hoho hoor hoot horo horr hort hory hotb hoth hoto hotr hott hotu hour hout hoyt hrob hrtb hryb htoh httr hubb hubo huby huhu huor huot huro hurr hurt huru hury huth huto hutt hutu huty huub huyr huyt hybo hyo- hyrt obbo obby obor obot oboy obrh obro obuh ohho ohob ohoh ohto ohtu ohyo ooby ooho oooh oooo oort oory ootb ooty orbb orbo orbu orby oro- oror orot oroy orro orry orth orto orub otho othr oto- otoh otoo otor otoy otro otry otto ottu otur otyr our- ouro ourt out- outb outh outo outy ouu- ouyr oyou rbbb rbbr rboh rhob rhoh rob- robb robo robt robu roby rohr rohu rohy roob roor root roro rort roru rory roth roto rotr rott roty roub rouh rout rouy royt rrrr rubb rubu ruby ruhh ruhr ruoy ruro ruru ruth ruto rutt rutu ruty ryhb ryob ryoh ryot ryth rytt ryyt tbrb thoo thor thot thou thro thru thtb thtr thur thuy thyh to-y tobo tobt tobu toby toho tohu tooh toor toot toro torr tort toru tory toth toto totr tott toty touh tour tout toyb toyo toyt troo trot trou troy trtr trub trut truu try- tryb tryo ttbb ttoy tttt tubb tubo tubr tubu tuht tuhu tuor turb turo turr turt turu tury tuto tutt tutu tuty tuuo tybo tyht tyr- tyro tyrr tyto tytt tyty ubbo uhoh uhry uhuh uor- urho uro- uroo urrh urry urth urur urut utby utor utoy utto uttu uuuu ybor ybry yhou yobo yoho yoot yoro yort yory yott youb your yout yoyo yrho ytht yubu yurt yury yuto yutu yuty yuyu yyyy