bbbb bbin bblb bibb bibi bibl biin bili bill bilu bin- bini binn binu birb biri birl birn birr biru blim blin blir blni blub blum blur bmir bmmi bnib bnim bnin bnml bnrr bril brim brin brrm brrr brum brun bubb bubi bubu buin buir buiu bulb buli bull bulu bum- bumb bunb buni bunn bunu bur- burb buri burl burm burn burr buru ibbm ibim ibml ibri iiii iinm iium ilbm ilin ilir ill- illi ilmr ilni ilrm ilum imbi imin imir imli immi imri imrr imun inni innr innu inri inui inul inun irbm iri- iril irin irlb irri irul irun iuiu lblr libr libu liii liin liir lilb lili lill lilu limb limi liml limm limn limu linn liri lirl lirn lirr liru liun llll lmii lmln lmmr lrrr luin luli lull lulu lumb lumi luni lunn luri mbim miii miin mili mill miln milr milu mim- mimi mini minn minu miri mirl mirr miru miui mlii mlin mlnr mmii mmli mmmm mmun mnbb mnin mrbb mrbm mrln mrml mubi muil muin muir muli mull mulm mulu mumm mumu muni munn munu muri murl murn murr muru n-ii nibi nibm niir niiu nili nill nilu nimb nimi nimr nimu nini ninl niru niur nlrb nmml nmri nnnn nrlb nrml nrrl nubi nubl nuim nuin nuli null numb numi numm numu nunn nuri nurl nurn nurr nuru rbbb rbbr rib- ribu riin rill rilu rimi rimm rimu rinn riri rlin rlml rmll rnbr rnin rnli rrrr rrum rrun rubb rubi rubu ruin rull rumb rumi ruml rumm runi runn ruri ruru ruun ubbi ubii ubir ubli uiml uirr ulim ulli ullr ulmi ulmu ulul ulum umb- umbi umri uni- unii unin unir unmr unni unum urbi urib urim urin uriu urmi urni urri urum urun urur uulu uuni uuri uuuu