-hou bbbb bbpr bhir bhoi bhor bhuj bhur bhuu bibb bibi bibo bihi bihu biji biju bio- bioi biou bipp bipu birb biri biro birr biru bobb bobi bobo bobu boho bohr bohu boi- boii boiu boji bojo boju boob booh boop boor bopp bor- borh bori borj boro borr boru bouh boup bour brih brio brob broh broo bror brou brrr bruh brup bubb bubi bubo bubu buhi buho buhr buir buiu buji bujo buju bur- burb burh buri burj buro burp burr buru h-ii hbio hhhh hhip hibi hibu hihi hiho hiiu hijo hiob hipo hipp hiri hiro hiru hobo hoho hoip hoir hojo hoju hoop hoor hopi hopo hopp hori horo horr houp hour hrib hrip hrob hrpp hubb hubi hubo huhi huhu huib huir huji huor hupp huri huro hurr huru huub ibri ibro ihob ihop ihub ihuo iiii iiio iioi iioo iiop ijji ijuh ijui iobi ioii ioio iooi iooo iori iphr ipoh ipop ippo ippr ipri ipur irbp iri- irio irip irob iroh irop irri iuiu iupp j-ro jbob jibb jibi jiji jiju jiri jiro jiru jobo jobu johi joho joio joji jojo joor joro joup jour jpip jpop jrbr jruh jubu juhi juho juhu juip juju jupi jupp jupu juri jurr obbo oboi obor obrh obri obro obuh ohhi ohho ohio ohob ohoh oiii oobi ooho ooij ooji oooh oooo ophi opii opio opo- opoj opor oppi oppo orbb orbi orbo orbu ori- orio orji oro- oror orph orpi orri orro orub oruj orup ouii ouir ouju ouph our- ouro ouu- phi- phip phob phoh phoo phrr pibb pibi piip piob pipi pipo pipp piri piro pirr piru pobo poio poji pojo pooh poop poor pop- popi popo popp porb pori poro porr poui poup pour pphi ppib ppih pppo pppp ppru ppur pri- prii pro- prob proj proo prop prou prri pruu pubu puhi puir puiu pujo puju pupi pupu pur- purb puri puro purp purr puru rbbb rbbr rboh rbpj rhib rhio rhob rhoh rhoj rib- ribo ribu riho riji rijo rijp riou ripi ripp ripr riri rob- robb robi robo robu rohr rohu roio roir roiu roji rojo roob rooi roop roor ropo rori roro roru roub rouh roup rpho rpii rpob rrrr rubb rubi rubp rubu ruhh ruhi ruhr rupp ruri ruro rurp ruru u-rp ubbi ubbo ubii ubir uhoh uhuh uhup uipi uirr ujpo uor- upor uppp uppu upri upup urbi urho urib uriu uro- uroo urpo urrh urri urup urur uuri uuuu