bbbb bbch bbci bbrc bcbc bccc bcci bcit bctc bhcc bhir bhit bhrt bibb bibi bicc bich bici bihi birb biri birr birt biry bitc bith bitt brcb bric brih brit brrr brtc bry- btcc btrc btrt btry bttb bych byit byrt byth cbbc cbcc cbcr cbct cbir cbit cbrh cbrt cbry cbtc cbyt ccbc cccb cccc ccci cchr cchy ccic ccii ccir ccrc ccri ccrt cctb cctc cctt chch chci chib chic chih chir chit chrb chrc chrr chrt chtr chtt chy- chyc cibc cibi cicc cich cici cicr cict cihr ciht ciii ciit cirb circ cirh ciri cirr cirt citb cith citi citt city crbc crcc crcr crib cric crit crrt crtc cry- cryb ctbi ctic ctrc cybb cybc cybi cyc- cycb cycc cyrt cyt- cytb cyy- cyyc h-ii hbic hbit hcbc hccb hccc hcch hchi hhhh hi-c hibi hibt hicc hich hihc hihi hiht hiit hiri hirt hitc hiti hitt hrib hrit hrrc hrtb hryb htcc httr hyrt i-by ibrc ibri ibtb ibtc ibyi icbc iccb iccc icci iccr icct ichc ichi ichr ichy icrc icrr icrt icry ihcc ihit ihrc ihtc iiht iiii iiit iirc iitr iitt irby ircc iri- iric iriy irrc irri irti itby itch ithc itic itri itry itty rbbb rbbr rcbc rccb rccc rchb rcic rctc rcti rcyc rhib rib- riby ricc rich rict riht riri rith riti ritt rrrr rtcc rych ryhb ryth rytt ryyt tbcb tbcc tbit tbrb tcby tccc tch- tchh tchi tchr tctc thch thi- thic thir thri thtb thtr thyh tibi ticc tich tiht tiit tirb tiri tirr tiry titc tith titi titt tiyi trcc tri- trib tric trit trtc trtr try- tryb ttbb tttt tybi tyht tyir tyr- tyrr tyti tytt tyty ybry yccc ycch yctc yhit yirb yirr yiti ytch ytht yyyy