-hou bbbb bbdd bbdo bbpr bd-r bddh bdii bhir bhoi bhor bhur bhuu bibb bibi bibo bidi bido bidr bidu bihi bihu bio- bioi biou bipp bipu birb bird biri biro birr biru bobb bobi bobo bobu bodb bodh bodi bodo bodu bohd boho bohr bohu boi- boid boii boiu boob bood booh boop boor bopp bor- bord borh bori boro borr boru boud bouh boup bour bprd brdo brid brih brio brob brod broh broo bror brou brrr brud bruh brup bubb bubi bubo bubu budb budd budi budo budu buhi buho buhr buid buir buiu bur- burb burd burh buri buro burp burr buru d-bo dbpd dddd ddpo ddub dhbp dhod dhor dhpr dhur dibb dibo dibp didi dido didu dihu diii diop dior diou dipo dipp dipu dird dirr dobb dobi dobu dod- dodd dodi dodo dohr doid doob dood doop door dopo dopp dopr dord dori doro dorp dorr doru doub doud doup dour dphp dpph drib drih drip drob drod droh drop drou drub drui drup druu dub- dubb dubh dubu dudd dudo dudu duhr duhu duid duir duo- dupo duri duro duru duur h-ii hbio hdod hdri hhhh hhip hibi hibu hidi hihi hiho hiiu hiob hipo hipp hird hiri hiro hiru hobo hodh hodi hodr hoho hoid hoip hoir hood hoop hoor hopi hopo hopp hord hori horo horr houd houp hour hpdh hrib hrid hrip hrob hrod hrpp hrud hubb hubi hubo hudd hudi hudo hudu huhi huhu huib huid huir huor hupp hurd huri huro hurr huru huub ibdo ibid ibrd ibri ibro iddo idid idio idir idro idub iduo ihdr ihob ihop ihrd ihub ihud ihuo iiii iiio iioi iioo iiop iobi iod- iodd iodo ioii ioio iooi iooo iori ipdi iphr ipid ipod ipoh ipop ippo ippr ipri ipur irbp irdo irdp iri- irid irio irip irob irod iroh irop irri iuiu iupp obbo obid oboi obor obrh obri obro obuh odbo oddd oddi odio odir odiu odoh odoo odop odor odou odrp odur ohhi ohho ohid ohio ohob ohoh oido oiii oobi oodi ooho ooid oooh oooo oord ophi opii opio opo- opor oppi oppo orbb orbi orbo orbu ordo ordu ori- orid orio oro- oror orph orpi orri orro orub orup oudh ouii ouir ouph our- ouro ouu- pdpr phi- phip phob phoh phoo phrr pibb pibi pido piip piob pipi pipo pipp piri piro pirr piru pobo pod- podd podi podo podu poid poio pood pooh poop poor pop- popi popo popp porb pori poro porr poud poui poup pour pphi ppib ppid ppih ppod pppd pppo pppp ppru ppur pri- prid prii pro- prob prod proo prop prou prpd prrd prri prud pruu pubu pudo pudu puhi puid puir puiu pupi pupu pur- purb puri puro purp purr puru rbbb rbbr rboh rdbp rdio rhib rhio rhob rhod rhoh rib- ribo ribu ridd ridi rido riho riou ripd ripi ripp ripr riri rob- robb robi robo robu rodd rodi rodo rohr rohu roid roio roir roiu roob rood rooi roop roor ropo rori roro roru roub roud rouh roup rpdp rpho rpii rpob rrrr rubb rubi rubp rubu rudd rudi rudo rudp ruhh ruhi ruhr ruid rupp rurd ruri ruro rurp ruru ruud u-rp ubbi ubbo ubid ubii ubir ubod ubud uddi udid udir udoh udoo udop udpd uh-d uhid uhoh uhuh uhup uipi uirr uor- updo upor uppp uppu upri upup urbi urdu urho urib uriu uro- uroo urpo urrh urri urup urur uuri uuuu