-hou -ous bbbb bbbs bbhs bbrg bggs bghs bhhs bhir bhog bhoi bhor bhur bhuu bibb bibi bibo bibs bigb bigg bigo bigs bigu bihi bihs bihu biis bio- biog bioi bios biou birb birg biri biro birr birs biru bis- bish biso biss bisu bobb bobi bobo bobs bobu bogg bogh bogi bogo bogs boho bohr bohs bohu boi- boii bois boiu boob boog booh boor boos bor- borg borh bori boro borr bors boru bosh bosi boso boss bosu bouh bour bous brhs brig brih brio bris brob brog broh broo bror bros brou brrr brrs brsb brsr brug bruh brus bsgs bshs bsos bubb bubi bubo bubs bubu bugg bugh bugi bugo bugs buhi buho buhr buhs buir buis buiu bur- burb burg burh buri buro burr burs buru bush busi buss busu buus gbbo gbbs gbhs gggg gghg ggss ghhs ghib ghoi ghug gibb gibh gibs gigg gigi gigo gigs gihs giis giog gioi girg giri giro girr girs giru gish giss giur gius gobi gobo gobs gogh gogi gogo gogs gohb gohs gois goog gooi goor goos gorb gorg gori goro gorr gors gosh gosi goso goss gosu gou- goug gour gous grbr grhs grib grig gris grob grog groh groi groo gror gros grou grrr grrs grss grub grug grui grur grus gshs gsis gsoh gsos gsur gubb gubi gubs gubu gugb gugg gugh gugi gugu guhr guib guis guos gurb gurg gurh guri guro gurr gurs guru gusb gush guss guus h-ii hbbs hbhs hbio hbos hbrs hbss hghs hhgg hhhh hhhs hhus hibi hibu high higi higs hihi hiho hiis hiiu hiob hiri hiro hirs hiru hisb hish hiss hobo hobs hogg hogh hogi hogo hogs hogu hoho hoir hois hoor hoos horg hori horo horr hors hosh hoss hour hrhs hrib hrob hros hrso hshs hsob hsur hubb hubi hubo hubs hugg hugh hugi hugo hugs huhi huhs huhu huib huir huis huor huos huri huro hurr hurs huru hush husi huso huss huub huus i-go ibis ibos ibri ibro ibss ibus igbo iggs igis igoo igor igri igso igus ihis ihob ihss ihub ihug ihuo iiii iiio iiis iioi iioo iios iirs iisi iisr iisu iobi ioii ioio iooi iooo ioos iorg iori iors ioso iosu ioug ious irgs irhs iri- irig irio iris irob iroh irri irrs irsg irus ishi ishr ishs isis iso- isor isos isrg isri issh issi isso issr isss issu isuh isus iugs iuiu iuss obbo obhs obis oboi obor obos obrh obri obro obsr obss obuh obus ogb oggi oghi oghs ogog ogoi ogou ogri ogro ogsi ogui ogus ohgr ohhi ohho ohhs ohio ohis ohob ohoh ohos ohso ohss ohus oigo oiii oios oisu oobi ooho oohs oooh oooo ooos oosi oous orbb orbi orbo orbs orbu orgo orgs orhs ori- orig orio oris oro- oror oros orri orro orrs orsi orso orsu orub orus osgi oshi osho oshs oshu osii osis osoi osoo osor osos osro ossb ossi osso ossu oubs ough ouii ouir ouis our- ouro ours ouu- rbbb rbbr rbbs rbgh rbhs rbis rboh rbss rgbi rghs rhbg rhhs rhib rhio rhob rhog rhoh rhos rhug rhus rib- ribo ribs ribu rigg righ rigi rigo rigs rigu riho rihs riis rios riou riri rirs rish risi riso riss risu rius rob- robb robi robo robs robu rogg rogh rogi rogo rohr rohs rohu roig roio roir rois roiu roob roog rooi roor roos rori roro roru rosh rosi roso ross roub rouh rous rrhs rrrr rsbi rsgb rshs rsis rsos rubb rubi rubs rubu rugg rugh rugi rugs ruhh ruhi ruhr ruhs ruis ruri ruro rurs ruru rush rusi ruso russ rusu s-ib s-ii s-os sbbs sbhs sbig sbor sbsi sbus sggg sggs sghs sgio sgro sgsh sgss shbs shgr shhh shhs shib shig shih shii shio shir shis shiu shog shoo shor shos shou shri shrs shub shug shui shur shus shuu sibi sibo sibs sibu sigg sigh sigi sigo sigs sihi sihr sihs sihu sior sios siou siri siro sirr sirs siru sish sisi siss sisu siui sius sobo sobr sobs sobu sogh sogi sogo sogs sohh soho sohs sohu soir sois soog soor soos sorb sorg sorh sori soro sorr sors soru sosh sosi soso soss sour sous srgb srhs srib sris sros srub ssbr ssgs sshs ssis ssrg ssri ssrs sssb sssh sssi ssss sub- subb subg subh subi subo subs sug- sugg sugh sugi sugo suhb suhi suho suhr suig suio suir suis suoh suor suos sur- surg suri suro surr surs suru sus- susi suso suss susu suus ubbi ubbo ubii ubir ubis ubos uggo uggs ughi ughs ugis ugos ugri ugro ugur uguu uhoh uhrs uhss uhuh uirr uor- urbi urbs urgh urgi urgu urho urib uris uriu uro- uroo urrh urri ursi urso urss ursu urur urus usbr usbs usgo ushi usho ushr ushs ushu usis usog usoi usos ussb ussr usss ussu usui usus uuri uusi uuuu