bbbb bbin bibb bibi biin bin- bini binn binu biny birb biri birn birr biru biry bnib bnin bnrr brin brrr brun bry- bryn bubb bubi bubu buin buir buiu bunb buni bunn bunu bur- burb buri burn burr buru bury buyi buyu byrn byun i-by ibri ibuy ibyi iiii inby inni innr innu inny inri inui inun irby iri- irin iriy irri irun iryn iuiu n-ii nibi niir niiu nini niru niur niyi nnnn nubi nuby nuin nunn nuny nuri nurn nurr nuru nyny nyrb rbbb rbbr rib- ribu riby riin rinn riny riri rnbr rnin rrrr rrun rubb rubi rubu ruby ruin runi runn runy ruri ruru ruun ruyi rynn ryun ubbi ubii ubir uirr uni- unii unin unir unni urbi urib urin uriu urni urri urry urun urur uryn uuni uuri uuuu uuyn uyin uyir ybry yirb yirn yirr yrin yrun yryn yubu yuin yuny yuri yurn yury yuyu yyyy