bbbb bbch bbci bbdd bbrc bcbc bccc bcci bchd bcit bcru bctc bcuc bd-r bdbc bddc bddh bdii bhcc bhir bhit bhrt bhur bhut bhuu bibb bibi bicc bich bici bidi bidr bidu bihi bihu birb bird biri birr birt biru bitc bitd bith bitt bitu brcb brdt bric brid brih brit brrr brtc bruc brud bruh brut btcc btdt btrc btrt bttb bubb bubi bubu bucc buch buci bucu budb budd budi budu buhi buhr buic buid buir buit buiu bur- burb burd burh buri burr burt buru but- buti butt c-cd cbbc cbcc cbcr cbct cbcu cbdb cbdc cbdi cbid cbir cbit cbrd cbrh cbrt cbtc ccbc cccb cccc ccci cccu ccdc ccdh ccdi ccdr cchr ccic ccid ccii ccir ccrc ccri ccrt cctb cctc cctt ccuc ccut cd-r cddb cddr cdic cdii chch chci chdi chib chic chid chih chir chit chiu chrb chrc chrd chrr chrt chtr chtt chub chud chui chur chut cibc cibi cicc cich cici cicr cict cicu cidc cidi cidr cidt cihr ciht ciid ciii ciit cirb circ cirh ciri cirr cirt citb cith citi citt citu ciuc crbc crbu crcc crcr crdc crib cric crit criu crrt crtc crub crud crut ctbi ctic ctrc cub- cubb cubi cucc cuci cudi cui- cuir cuit curb curd curi curr curt cut- cutc cuth cutt dbcc dbit dbtt dcbc dccb dccc dcci dcct dccu dcdb dcii dctc dddd ddrc ddub dhur dibb dich dici dict didi didu dihu diii dird dirr dirt dith diti ditt drbc drib dric drih drit drub drui drut druu dtcc dthd dub- dubb dubc dubh dubu duch duct dudd dudu duhr duhu duid duir duit duri durt duru duur duut h-ii hbcd hbic hbit hbtu hcbc hccb hccc hcch hcdr hchi hcrd hdci hdri hdtt hhhh hi-c hibi hibt hibu hicc hich hidi hihc hihi hiht hiit hiiu hird hiri hirt hiru hitc hiti hitt hrdc hrib hrid hrit hrrc hrtb hrud htcc httr hubb hubi huch hucu hudd hudi hudu huhi huhu huib huid huir huit hurd huri hurr hurt huru huth huti hutt hutu huub ibid ibrc ibrd ibri ibtb ibtc icbc icbd iccb iccc icci iccr icct iccu icdc icdd ichc ichd ichi ichr ichu icrc icrr icrt icru icub idcr idic idid idir idrc idub ihcc ihdr ihit ihrc ihrd ihtc ihub ihud iicd iiht iiii iiit iirc iitr iitt iiuc ircc ircd ircu irdc iri- iric irid irrc irri irti itch ithc itic itri itur iucc iuiu rbbb rbbr rcbc rccb rccc rcdc rchb rcic rcid rcrd rctc rcti rhib rib- ribu ricc rich rict ridc ridd ridi riht riri rith riti ritt ritu rrrr rtcc rtdt rubb rubi rubu ruch ruci ruct rudd rudi ruhh ruhi ruhr ruid ruit rurc rurd ruri ruru ruth ruti rutt rutu ruud tbcb tbcc tbcd tbit tbrb tccc tccu tcdd tch- tchh tchi tchr tchu tctc tddb tdri thch thdr thi- thic thir thri thru thtb thtr thud thur tibi tibu ticc tich tidc tidd tiht tihu tiit tiiu tirb tird tiri tirr tiru titc tith titi titt titu trcc tri- trib tric trit trtc trtr trub truc trud trut truu ttbb tttt tubb tubr tubu tucc tuch tudi tudu tuht tuhu tuit tuiu turb turc turd turi turr turt turu tuti tutt tutu ubbi ubic ubid ubii ubir ubit ubud ucbc ucci ucdc ucdd uchi ucrc ucut udbc uddi udic udid udir uh-d uhid uhti uhuh uirr urbi urch urci urdu urib uric uriu urrh urri urth urur urut utid utri utti uttu uuri uuuu