-hou bbbb bbin bhir bhoi bhor bhur bhuu bibb bibi bibo bihi bihu biin bin- binh bini binn bino binu bio- bioi bion biou birb biri birn biro birr biru bnib bnin bnor bnrr bobb bobi bobo bobu bohn boho bohr bohu boi- boii boin boiu boni bonn bono bonu boob booh boon boor bor- borh bori born boro borr boru bouh boun bour brih brin brio brno brob broh bron broo bror brou brrr bruh brun bubb bubi bubo bubu buhi buho buhr buin buir buiu bunb buni bunn buno bunu buon bur- burb burh buri burn buro burr buru h-ii hbio hhhh hibi hibu hihi hiho hiiu hinn hino hiob hiri hirn hiro hiru hnoi hobo hohn hoho hoir honi hono honu hoon hoor hori horn horo horr hour hrib hrob hron hrun hubb hubi hubo huhi huhn huhu huib huir hunh huni huon huor huri hurn huro hurr huru huub i-no ibon ibri ibro ihob ihub ihuo iiii iiio iino iioi iioo inbo inni inno innr innu ino- inoi inon inor inou inri inro inui inun iobi ioii ioio ioni ionn iono iooi iooo iori ioun iri- irin irio irob iroh iron irri irun iuiu iuno n-ii nbbo nhnn nhon nibi nibo niir niiu ninh nini nino nioh nion nioo niou niro niru niur nnnn nobi nobo nobu nohn noho noib noin noio noir non- noni nonn nono nonu noo- noob noon nooo noor nor- norb nori norn noro norr nouh noun nour nron nubi nuhi nuin nunn nuno nuon nuri nurn nurr nuru obbo obin oboi obon obor obrh obri obro obuh ohhi ohho ohio ohno ohob ohoh ohrn oiii oion onir onni onno onon onor onur oobi ooho oooh oooo orbb orbi orbo orbu ori- orin orio orni orno oro- oron oror orri orro orub ouii ouin ouir oun- our- ourn ouro ouu- rbbb rbbr rboh rhib rhin rhio rhob rhoh rhon rhun rib- ribo ribu riho riin rinn rino rion riou riri rnbr rnin rob- robb robi robo robu rohn rohr rohu roin roio roir roiu roni rono roob rooi roon roor rori roro roru roub rouh roun rrrr rrun rubb rubi rubu ruhh ruhi ruhn ruhr ruin runi runn runo ruri ruro ruru ruun ubbi ubbo ubii ubir ubon uhno uhoh uhuh uirr uni- unii unin unio unir unni unno unon unro uor- urbi urho urib urin uriu urni uro- uroo urrh urri urun urur uuni uuno uuri uuuu