bbbb bbbs bbdd bd-r bdii bdry bdsd bibb bibi bibs bidi bidr bids biis birb bird biri birk birr birs biry bis- bisd bisk biss bisy biys bkry brds brdy brid brik bris brkb brrr brrs brsb brsr bry- bryd bryk bsbd bsrd bssd byik byki byrd byrk bysb bysi byss bysy byyd dbrs dbss dddd ddry ddss dibb dibs diby didi dids didy diii diis diki dird dirk dirr dirs dis- disd disi disk diss disy diyi dkid drib drrs dry- drys dsdr dsri dsrr dssi dydd dykr dyr- dyrb dyri dyrk dys- dysi dysr dyss dyyr i-by ibid ibis ibrd ibri ibss ibyi idid idir idis idss iiii iiis iirs iisd iisi iisr ikid ikki ikky ikri irby irds iri- irid iris iriy irki irks irri irrs isbd isdb isds isis isri issi issr isss issy isys k-id kbbb kbbd kbbi kbbk kbbr kbbs kbdb kbdi kbdr kbds kbdy kbib kbid kbik kbis kbiy kbkb kbkk kbkr kbky kbrb kbrd kbri kbrk kbry kbsb kbsi kbsk kbsr kbss kbsy kbyb kbyi kbyr kbys kdbb kdbi kdbr kdbs kddb kddd kddi kddk kddr kdis kdkb kdkd kdkk kdkr kdrb kdri kdrs kdry kdsd kdsk kdsr kdss kdyk kibb kibi kibr kibs kiby kidb kidd kidi kidk kidr kids kidy kiid kiii kiik kiis kikd kiki kikk kikr kirb kiri kirk kirr kirs kisd kisi kisk kisr kiss kisy kiyi kiyk kiys kkbb kkbd kkbi kkbr kkbs kkdd kkdy kkid kkik kkkk kkrb kkrk kkrr kkrs kksd kksi kksr kkss kkys kkyy krbb krbd krbi krbk krbr krdd krdr krds krdy krib krid krik kris krkd krki krkk krkr krks krky krrb krri krrk krrr krrs krry krsd krsk krsr krss krsy kryd kryk kryy ksbi ksbr ksbs ksby ksdi ksdk ksdr ksds ksib ksid ksii ksik ksir ksis ksiy kskb kskd kskk kskr ksks ksky ksrb ksrr ksrs ksry kssi kssr ksss ksyr ksyy kybb kybi kybr kyby kydd kyds kydy kyis kykd kykk kykr kyks kyky kyrk kyrs kysk kysr kyyi kyyk kyys kyyy rbbb rbbr rbbs rbds rbis rbsd rbss rib- ribs riby ridd ridi rids riis riki rikk riri rirs risd risi risk riss rkss rrrr rsbi rsdd rsds rsid rsis rydy ryis ryki rysy s-ib s-ii sbbs sbds sbrk sbsd sbsi sdds sdib sdrs sdry sdss sibi sibs siby sidd sidi sidr sids sidy siik siki sikr siks siri sirk sirr sirs sisd sisi sisk siss sisy siyi skid skik skir skis sksd skss sky- skyr skys skyy srby srib sris srsd ssbr ssby ssdd ssid ssis ssri ssrs sssb sssi ssss sydi syds syik syis syrs syry syss syyk ybbs ybry yidi yids yirb yird yirk yirr yisk yiss ykid ysby ysii ysyb yyyy