bbbb bbbs bbci bbdd bcbc bcbs bccc bcci bccs bcds bcis bcsc bcss bdbc bddc bdii bdsd bibb bibi bibs bicc bici bics bidi bids biis bis- bisc bisd biss bsbd bsci bscs bsic bssc bssd c-cd cbbc cbbs cbcc cbcs cbdb cbdc cbdi cbds cbid cbsc cbsi ccbc cccb cccc ccci cccs ccdc ccdi ccds ccic ccid ccii ccis ccsd ccsi ccss cdcs cddb cdic cdii cdis cdss cibc cibi cicc cici cics cidc cidi cids ciid ciii ciis cis- cisc cisd ciss cscb cscc cscd csci cscs csdb csib csid csis cssd dbcc dbcs dbss dcbc dccb dccc dcci dccs dcdb dcds dcii dcis dcsc dcss dddd ddss dibb dibs dici didi dids diii diis dis- disc disd disi diss dsbc dscc dscs dssc dssi ibcs ibid ibis ibss icbc icbd icbs iccb iccc icci iccs icdc icdd icis icsb icsc icsd icsi icss idic idid idis idsc idss iicd iiii iiis iisc iisd iisi isbd iscc iscd isci iscs isdb isdc isds isic isis issc issi isss s-ib s-ic s-ii sbbs sbcc sbcs sbds sbic sbsd sbsi scbi sccc sccs scdc scds sci- scic scid scis scsc scsd scsi sdcc sddc sdds sdib sdic sdsc sdss sibc sibi sibs sicc sici sics sidd sidi sids sisc sisd sisi siss sscc ssci sscs ssdc ssdd ssid ssis sssb sssc sssi ssss