bbbb bbci bbdd bbrc bcbc bccc bcci bd-r bdbc bddc bdii bdry bibb bibi bicc bici bick bidi bidr birb bird biri birk birr biry bkcy bkry brcb brdy bric brid brik brkb brrr bry- bryd bryk byck byik byki byrd byrk byyd c-cd cbbc cbcc cbcr cbdb cbdc cbdi cbid cbir cbkr cbrd cbry ccbc cccb cccc ccci ccdc ccdi ccdr ccic ccid ccii ccir ccrc ccri cd-r cddb cddr cdic cdii cibc cibi cicc cici cicr cidc cidi cidr ciid ciii cikr cirb circ ciri cirk cirr ckbc ckbi ckck ckcy ckrc ckrd ckry crbc crcc crcr crdc crib cric crik crkc cry- cryb cybb cybc cybi cyc- cycb cycc cyrk cyy- cyyc dbcc dc-y dcbc dccb dccc dcci dcdb dcii dcrk dddd ddrc ddry dibb diby dici dick dicy didi didy diii diki dird dirk dirr diyi dkdc dkid drbc drib dric dry- dycd dyck dydd dykr dyr- dyrb dyrc dyri dyrk dyyr i-by ibid ibrc ibrd ibri ibyi icbc icbd iccb iccc icci iccr icdc icdd icky icrc icrr icry idcr idic idid idir idrc iicd iiii iirc ikid ikki ikky ikri irby ircc ircd irdc iri- iric irid iriy irki irrc irri k-ci k-id kbbb kbbc kbbd kbbi kbbk kbbr kbcb kbci kbck kbcr kbcy kbdb kbdi kbdr kbdy kbib kbic kbid kbik kbiy kbkb kbkk kbkr kbky kbrb kbrc kbrd kbri kbrk kbry kbyb kbyi kbyr kcbc kcbd kcbi kcbk kcbr kccb kccc kccd kcci kcck kccr kccy kcdc kcdd kcdi kcdr kcdy kcic kcid kcii kcir kckc kckk kckr kcky kcrc kcri kcrr kcry kcyk kcyy kdbb kdbi kdbr kdcc kdcd kdcr kddb kddc kddd kddi kddk kddr kdic kdkb kdkd kdkk kdkr kdrb kdri kdry kdyk kibb kibc kibi kibr kiby kicb kicc kicd kick kicr kicy kidb kidd kidi kidk kidr kidy kiic kiid kiii kiik kikc kikd kiki kikk kikr kirb kirc kiri kirk kirr kiyi kiyk kkbb kkbd kkbi kkbr kkcb kkcd kkci kkck kkcr kkcy kkdc kkdd kkdy kkic kkid kkik kkkk kkrb kkrc kkrk kkrr kkyc kkyy krbb krbd krbi krbk krbr krcb krcc krcd krci krdc krdd krdr krdy krib krid krik krkc krkd krki krkk krkr krky krrb krrc krri krrk krrr krry kryd kryk kryy kybb kybc kybi kybr kyby kycc kyck kycr kydd kydy kykc kykd kykk kykr kyky kyrc kyrk kyyi kyyk kyyy rbbb rbbr rcbc rccb rccc rcdc rcic rcid rcrd rcyc rib- riby ricc rick ridc ridd ridi riki rikk riri rrrr ryck rydy ryki ybry yccc yidi yirb yird yirk yirr ykid yyyy