bbbb bhir bhit bhoi bhor bhot bhrt bibb bibi bibo bihi bikh biko bio- bioi biot birb biri birk biro birr birt bith bito bitt bobb bobi bobo boho bohr boht boi- boii boit boki boko boob booh book boor boot bor- borh bori bork boro borr bort botb both boti boto bott brih brik brio brit brkb brob broh brok broo bror brot brrr btob btor btrt bttb h-ii hbio hbit hhhh hibi hibt hihi hiho hiht hiit hiki hiob hiri hirk hiro hirt hiti hito hitt hkir hobo hoho hoik hoir hoit hoki hoko hook hoor hoot hori hork horo horr hort hotb hoth hoti hoto hotr hott hrib hrit hrob hrtb htoh htrk httr ibot ibri ibro ibtb ihit ihob iiht iiii iiio iiit iioi iioo iitr iitt ikki ikko ikoo ikri iobi ioii ioio ioit ioko iooi iooo iori ioto iri- irio irki irob iroh irri irti itko itoh itoi itoo itor itri itto kbbb kbbi kbbk kbbo kbbr kbbt kbhb kbhh kbhi kbhr kbht kbib kbik kbio kbit kbkb kbkk kbko kbkr kbob kboi kbok kboo kbot kbrb kbrh kbri kbrk kbro kbrt kbtb kbtk kbto kbtr kbtt khbr khbt khhk khho khii khio khit khki khkk khkr khob khoi khok khor khot khri khrk khro khrr khrt khtb khth khti khtk khto khtr khtt kibb kibi kibo kibr kibt kihh kihi kihk kiho kihr kiht kiii kiik kiit kiki kikk kiko kikr kikt kioh kioi kiok kioo kiot kirb kiri kirk kiro kirr kirt kith kiti kito kitr kitt kkbb kkbi kkbo kkbr kkbt kkhb kkhh kkhi kkhk kkhr kkik kkit kkkk kkob kkoh kkoo kkor kkot kkrb kkrh kkrk kkro kkrr kkrt kktk kobb kobi kobk kobo kobr kohh kohi koho kohr koht koii koir koit kokb kokh koki kokk koko kokr koob kooi kook kooo koor koot korb kori kork koro korr kort kotb koth koti kotk koto kotr kott krbb krbi krbk krbr krbt krib krik krio krit krkh krki krkk krko krkr krob kroh kroi krok kroo kror krrb krri krrk krro krrr krrt krth krti krtk krto krtr ktbb ktbr ktbt kthh kthi kthk ktho kthr ktht ktib ktik ktkb ktkk ktko ktkr ktkt ktob ktoh ktok ktoo ktor ktot ktrb ktrh ktri ktrk ktro ktrr ktrt ktth ktti kttk ktto kttr kttt obbo obit obkb oboi obok obor obot obrh obri obro ohhi ohho ohio ohob ohoh ohok ohto oiii oiko oirt oiti okir okko okok okor okot okro okto oobi ooho oooh oooo oort ootb orbb orbi orbo ori- orio orit orko oro- orok oror orot orri orro orth orto otho othr otit oto- otoh otok otoo otor otro otti otto rbbb rbbr rboh rhib rhio rhob rhoh rib- ribo riho riht riki rikk riot riri rith riti rito ritt rob- robb robi robo robt rohr roik roio roir roit rokh roki rokk roko rokr roob rooi rook roor root rori rork roro rort roth roti rotk roto rotr rott rrrr rthk tbit tbrb thi- thik thio thir thoo thor thot thri thro thtb thtr tibi tiht tiit tiki tiko tirb tiri tiro tirr tith titi tito titt tobi tobo tobt tohi toho toit toki toko tooh took toor toot tori tork toro torr tort toth toti toto totr tott tri- trib trik trio trit troi troo trot trtr ttbb tttt