bbbb bbdd bblb bd-r bdii bdry bibb bibi bibl bidi bidr bild bili bill bily birb bird biri birl birr biry bldr blir bly- brdy brid bril brrr bry- bryd byil byld byrd byyd dddd ddly ddry dibb diby didi didy diii dili dill dily dird dirl dirr diyi dlbd dlib dlii dlil drib dril dry- dydd dyll dyr- dyrb dyri dyyr i-by ibid ibly ibrd ibri ibyi idid idil idir idli idly idyl iiii ilir ill- illd illi illy irby iri- irid iril iriy irlb irri lblr ldry libr lidb lidl liii liir lilb lili lill lily lird liri lirl lirr liry liyl lldb llll llyr lrdd lrrr lrry lydd lyly rbbb rbbr rib- riby ridd ridi rill rily riri rrrr rydy ybry ydil yidi yild yili yill yirb yird yirr ylid ylli yrly yyyy