b-u bbb bbe bbf bbm bbo bbt bbu be- beb bee bef bem beo bet beu bfb bfe bff bfm bfo bft bfu bmb bme bmf bmm bmo bmt bmu bob boe bof bom boo bot bou btb bte btf btm bto btt btu bub bue buf bum buo but buu ebb ebe ebf ebm ebo ebt ebu eeb eee eef eem eeo eet ef- efb efe eff efm efo eft em- emb eme emf emm emo emt emu eo- eob eoe eof eom eoo eot eou etb ete etf etm eto ett etu eu- eub eue euf eut fbb fbe fbf fbm fbo fbt fbu feb fee fef fem feo fet feu ffe fff ffm ffo fft ffu fmb fme fmf fmm fmo fmt fmu fob foe fof fom foo fot fou ftb fte ftf ftm fto ftt ftu fub fue fuf fum fuo fut fuu m-f m-o mbb mbe mbf mbm mbo mbt mbu meb mee mef mem meo met meu mfb mfe mff mfm mfo mft mfu mmb mme mmf mmm mmo mmt mmu mob moe mof mom moo mot mou mtb mte mtf mtm mto mtt mtu mub mue muf mum mut muu ob- obb obe obf obm obo obt obu oeb oee oef oem oeo oet of- ofb ofe off ofm ofo oft ofu om- omb ome omf omm omo omt omu oo- oob oof oom ooo oot ot- otb ote otf otm oto ott otu ou- oue ouf oum ouo out tbb tbe tbf tbm tbo tbt tbu te- teb tee tef tem teo tet teu tfb tfe tff tfm tfo tft tfu tmb tme tmf tmm tmo tmt tmu to- tob toe tof tom too tot tou ttb tte ttf ttm tto ttt ttu tub tue tuf tum tuo tut tuu ubb ube ubf ubo ubt ubu ueb uee uef uem uet ufe uff ufm ufo uft ufu um- umb ume umf umm umo umt umu uob uoe uom uoo uot utb ute utf utm uto utt utu uue uum uut uuu