bbbb bbin bibb bibi biin bin- bini binn bint binu biny birb biri birn birr birt biru biry bitt bitu bnib bnin bnrr brin brit brrr brun brut bry- bryn btrt btry bttb bubb bubi bubu buin buir buit buiu bunb buni bunn bunt bunu bur- burb buri burn burr burt buru bury but- buti butt buty buyi buyu byit byrn byrt byun i-by ibri ibtb ibuy ibyi iiii iiit iitr iitt inby init inni innr innu inny inri inti intn intr intu inui inun irby iri- irin iriy irri irti irun iryn itby itin itri itry itty itur iuiu iuty n-ii nbti nbty nibi niir niit niiu nini nirt niru nitb niti nitr nity niur niyi nnit nnnn nntn ntnu ntru nttr ntui nubi nuby nuin nuit nunn nunt nuny nuri nurn nurr nurt nuru nutt nutu nyit nynt nyny nyrb nytb rbbb rbbr rib- ribu riby riin rinn riny riri riti ritt ritu rnbr rnin rnnt rnut rrrr rrun rubb rubi rubu ruby ruin ruit runi runn runt runy ruri ruru ruti rutt rutu ruty ruun ruyi rynn rynt rytt ryun ryyt tbit tbrb tibi tibu tiit tiiu tini tinn tint tinu tiny tirb tiri tirr tiru tiry titi titt titu tiyi tiyn tnut tri- trib trin trit trtr trub trun trut truu try- tryb ttbb tttt tubb tubr tubu tuin tuit tuiu tunb tuni tunn tunu tuny turb turi turn turr turt turu tury tuti tutt tutu tuty tuyn tybi tyin tyir tynt tyny tyr- tyrr tyti tytt tyty tyyn ubbi ubii ubir ubit uint uirr uni- unii unin unir unit unni untb unty unut urbi urib urin uriu urni urri urry urun urur urut uryn utby utin utri utti uttu uuni uuri uuuu uuyn uyin uyir ybry yirb yirn yirr yiti yrin yrun yryn yubu yuin yuit yuny yuri yurn yurt yury yutu yuty yuyu yyyy