bbbbbb biblio bifoil bilbul bilibo billio billit billof billoo billot billto biloli biotti bitblt bitflu bitoff bittil bittou blofib blotto blubbo blublu bobbio bobili boboli bolbol bolito bolobo bololo booboo bootit botbol bottlo botulu boubou boulot boulou boutob bubbio bububu buffit buffol bufolo bulbil bulbo- bulbul bullit bullou bulolo buttlo buttto buutuo filfil filli- fillol filoli fitbit fitful fitout fittit flitto flobot flubit foboff folbot foliot foofoo footit fotiou foufou fulfil fullof fultot futbol i-bult ibibio ibilib ibillo iiooio illfit illful illlit iloilo libffi libolo lifful lifull lilliu liotti litout lituit llubi lobito lobolo lolobi lolobo looloo loulou loutou lubuli lufful oboloi offutt oillit oooooo ototoi ottoii ouioui outfit outlit outlot outoul t-bill tibbit tibio- tiff-f tillot tillou tiltil titbit titibu titoff tituli toboot toitoi tolbot toluol tootoo tottoi tou-fu toubul touitt toutou toutuo tubful tubul- tufoli tuiuti tullio tuotuo tutill tuttul tuttut u-bolt u-boot uitoto ulutiu uolbut uutool