bbbb bbch bbci bcbc bccc bcci bcit bctc bhcc bhit bibb bibi bicc bich bici bihi bitc bith bitt btcc bttb bych byit byth cbbc cbcc cbct cbit cbtc cbyt ccbc cccb cccc ccci cchy ccic ccii cctb cctc cctt chch chci chib chic chih chit chtt chy- chyc cibc cibi cicc cich cici cict ciht ciii ciit citb cith citi citt city ctbi ctic cybb cybc cybi cyc- cycb cycc cyt- cytb cyy- cyyc h-ii hbic hbit hcbc hccb hccc hcch hchi hhhh hi-c hibi hibt hicc hich hihc hihi hiht hiit hitc hiti hitt htcc i-by ibtb ibtc ibyi icbc iccb iccc icci icct ichc ichi ichy ihcc ihit ihtc iiht iiii iiit iitt itby itch ithc itic itty tbcb tbcc tbit tcby tccc tch- tchh tchi tctc thch thi- thic thtb thyh tibi ticc tich tiht tiit titc tith titi titt tiyi ttbb tttt tybi tyht tyti tytt tyty yccc ycch yctc yhit yiti ytch ytht yyyy