b-u bbb bbf bbi bbm bbt bbu bfb bff bfi bfm bft bfu bi- bib bif bii bim bit biu bmb bmf bmi bmm bmt bmu btb btf bti btm btt btu bub buf bui bum but buu fbb fbf fbi fbm fbt fbu fff ffi ffm fft ffu fib fif fii fim fit fiu fmb fmf fmi fmm fmt fmu ftb ftf fti ftm ftt ftu fub fuf fui fum fut fuu i-f ibb ibf ibi ibm ibt ibu ifb iff ifi ifm ift ifu iib iif iii iim iit iiu im- imb imf imi imm imt imu itb itf iti itm itt itu iu- iub iui ium iut m-f mbb mbf mbi mbm mbt mbu mfb mff mfi mfm mft mfu mi- mib mif mii mim mit miu mmb mmf mmi mmm mmt mmu mtb mtf mti mtm mtt mtu mub muf mui mum mut muu tbb tbf tbi tbm tbt tbu tfb tff tfi tfm tft tfu tib tif tii tim tit tiu tmb tmf tmi tmm tmt tmu ttb ttf tti ttm ttt ttu tub tuf tui tum tut tuu ubb ubf ubi ubt ubu uff ufi ufm uft ufu uib uif uii uim uit uiu um- umb umf umi umm umt umu utb utf uti utm utt utu uum uut uuu