-hou bbbb bbrg bght bhir bhit bhog bhoi bhor bhot bhrt bhur bhut bhuu bibb bibi bibo bigb bigg bigo bigt bigu bihi bihu bio- biog bioi biot biou birb birg biri biro birr birt biru bith bito bitt bitu bobb bobi bobo bobu bogg bogh bogi bogo bogt boho bohr boht bohu boi- boii boit boiu boob boog booh boor boot bor- borg borh bori boro borr bort boru botb both boti boto bott bouh bour bout brig brih brio brit brob brog broh broo bror brot brou brrr brug bruh brut btob btor btrt bttb bubb bubi bubo bubu bugg bugh bugi bugo buhi buho buhr buir buit buiu bur- burb burg burh buri buro burr burt buru but- buti buto butt gbbo ggbt gggg gghg ghib ghit ghoi ghug gibb gibh gigg gigi gigo giog gioi girg giri giro girr girt giru gith gito giur gobi gobo gogh gogi gogo gohb goit goog gooi goor goot gorb gorg gori goro gorr gort goth goti goto gott gou- goug gour gout grbr grib grig grit grob grog groh groi groo gror grot grou grrr grub grug grui grur grut gtbr gubb gubi gubu gugb gugg gugh gugi gugu guhr guib gurb gurg gurh guri guro gurr gurt guru guth guti guto gutt gutu h-ii hbio hbit hbtu hhgg hhhh hibi hibt hibu high higi higt hihi hiho hiht hiit hiiu hiob hiri hiro hirt hiru hiti hito hitt hobo hogg hogh hogi hogo hogu hoho hoir hoit hoor hoot horg hori horo horr hort hotb hoth hoti hoto hotr hott hotu hour hout hrib hrit hrob hrtb htoh httr hubb hubi hubo hugg hugh hugi hugo huhi huhu huib huir huit huor huot huri huro hurr hurt huru huth huti huto hutt hutu huub i-go ibot ibri ibro ibtb igbo ight igoo igor igot igri ihit ihob ihub ihug ihuo iiht iiii iiio iiit iioi iioo iitr iitt iobi iogt ioii ioio ioit iooi iooo iorg iori ioto ioug iri- irig irio irob iroh irri irti itgo itoh itoi itoo itor itou itri itto itur iuiu obbo obit oboi obor obot obrh obri obro obuh ogb oggi oghi oght ogog ogoi ogou ogri ogro ogui ohgr ohhi ohho ohio ohob ohoh ohto ohtu oigo oiii oirt oiti oobi ooho oooh oooo oort ootb orbb orbi orbo orbu orgo ori- orig orio orit oro- oror orot orri orro orth orto orub otho othr otit oto- otog otoh otoo otor otro otti otto ottu otur ough ouii ouir ouit our- ouro ourt out- outb outh outi outo ouu- rbbb rbbr rbgh rboh rgbi rgit rgtr rhbg rhib rhio rhob rhog rhoh rhug rib- ribo ribu rigg righ rigi rigo rigu riho riht riot riou riri rith riti rito ritt ritu rob- robb robi robo robt robu rogg rogh rogi rogo rohr rohu roig roio roir roit roiu roob roog rooi roor root rori roro rort roru rotg roth roti roto rotr rott roub rouh rout rrrr rubb rubi rubu rugg rugh rugi ruhh ruhi ruhr ruit ruri ruro ruru ruth ruti ruto rutt rutu tbit tbrb thi- thig thio thir thog thoo thor thot thou thri thro thru thtb thtr thug thur tibi tibu tigh tigi tigr tiht tihu tiit tiiu tiou tirb tiri tiro tirr tiru tith titi tito titt titu tobi tobo tobt tobu togh togo togr togt tohi toho tohu toit tooh toor toot torg tori toro torr tort toru toth toti toto totr tott toug touh toui tour tout tri- trib trig trio trit trog troi troo trot trou trtr trub trug trut truu ttbb tttt tubb tubo tubr tubu tugg tugh tugu tuht tuhu tuig tuit tuiu tuor turb turg turi turo turr turt turu tuti tuto tutt tutu tuuo ubbi ubbo ubii ubir ubit uggo uggt ughi ugri ugro ugur uguu uhoh uhti uhuh uirr uor- urbi urgh urgi urgu urho urib uriu uro- uroo urrh urri urth urur urut utor utri utti utto uttu utug uuri uuuu