bbbb bblb bbrg bibb bibi bibl bigb bigg bigu bili bill bilu bily birb birg biri birl birr biru biry blir blrg blub blur bly- brig bril brrr brug bry- bubb bubi bubu bugg bugi buir buiu bulb bulg buli bull bulu bur- burb burg buri burl burr buru bury buyi buyl buyu bygg byil byul gggg gibb giby gigg gigi gilg gili gill girg giri girl girr giru giry giur gli- glib glrb glub glug glui glur glyg glyu grbr grib grig gril grrl grrr grub grug grui grur gry- gubb gubi gubu guby gugb gugg gugi gugu guib guil gulb guli gull gulu guly gurb gurg guri gurl gurr guru gury guyu gyil gyll gyr- gyri gyuu i-by ibly ibri ibuy ibyi iggy igil igli iglu igly igri iiii ilir ill- illi illy iluy irby iri- irig iril iriy irlb irri irul iuiu lblr lbug lgbu libr libu ligg ligi liig liii liir lilb lilg lili lill lilu lily lirg liri lirl lirr liru liry liyl liyu llll llyr lrgb lrrr lrry luby lugg lugi lugu lugy luli lull lulu lurg luri lury luyi lyly rbbb rbbr rgbi rib- ribu riby rigg rigi rigu rigy rill rilu rily riri rlug rrrr rubb rubi rubu ruby rugg rugi rull ruly ruri ruru ruyi ruyl ubbi ubii ubir ubli ubly ugli ugly ugri ugur uguu uirr ulli ullr ully ulul urbi urgi urgu urib uriu urri urry urur uulu uuri uuuu uyir ybry yili yill yirb yirr ylli yrly yubu yugg yugi yugu yuli yulu yuri yury yuyu yyyy