bbbb bbpr bhir bhit bhrt bhur bhut bhuu bibb bibi bihi bihu bipp bipu birb biri birr birt biru bith bitt bitu bpti brih brit brrr bruh brup brut btbp btrt bttb bubb bubi bubu buhi buhr buir buit buiu bur- burb burh buri burp burr burt buru but- buti butt h-ii hbit hbtu hhhh hhip hhtp hibi hibt hibu hihi hiht hiit hiiu hipp hipt hiri hirt hiru hiti hitt hprt hpti hrib hrip hrit hrpp hrtb htpp http httr hubb hubi huhi huhu huib huir huit hupp huri hurr hurt huru huth huti hutp hutt hutu huub ibri ibtb ihit ihub iiht iiii iiit iitr iitt iphr ippr ipri ipur iput irbp iri- irip irri irti irtp itri itup itur iuiu iupp phht phi- phip phit phrr phut pibb pibi piip pipi pipp piri pirr piru pith piti pitr pitt pitu pphi ppib ppih pppp ppru pptt ppur pri- prii prri prti prtp prtr prut pruu ptui pubu puhi puir puit puiu pupi pupu pur- purb puri purp purr puru put- puth puti putt putu rbbb rbbr rhib rib- ribu riht ripi ripp ripr ript riri rith riti ritt ritu rpii rrrr rttp rubb rubi rubp rubu ruhh ruhi ruhr ruit rupp rupt ruri rurp ruru ruth ruti rutt rutu tbit tbrb tbtp thhp thi- thir thpp thri thru thtb thtr thur tibi tibu tiht tihu tiit tiiu tip- tipi tipp tipt tipu tirb tiri tirr tiru tith titi titp titt titu tpir tppp tppr tptp tptr tput tri- trib trip trit trpp trtr trub trut truu ttbb tttt tubb tubr tubu tuht tuhu tuit tuiu tuph tupi tupu turb turi turp turr turt turu tuti tutt tutu u-rp ubbi ubii ubir ubit uhti uhuh uhup uipi uirr uppp uppu upri upup urbi urib uriu urrh urri urth urup urur urut utri utti uttu uuri uuuu