-ol b-u bbb bbf bbi bbl bbo bbs bbt bbu bfb bff bfi bfl bfo bfs bft bfu bi- bib bif bii bil bio bis bit biu blb blf bli bll blo bls blt blu bob bof boi bol boo bos bot bou bsb bsf bsi bsl bso bss bst bsu btb btf bti btl bto bts btt btu bub buf bui bul buo bus but buu fbb fbf fbi fbl fbo fbs fbt fbu fff ffi ffl ffo ffs fft ffu fib fif fii fil fis fit fiu flb flf fli fll flo fls flt flu fob fof foi fol foo fos fot fou fsb fsf fsi fsl fso fss fst fsu ftb ftf fti ftl fto fts ftt ftu fub fuf fui ful fuo fus fut fuu i-f ibb ibf ibi ibl ibo ibs ibt ibu ifb iff ifi ifl ifo ifs ift ifu iib iif iii iil iio iis iit iiu il- ilb ilf ili ill ilo ils ilt ilu io- iob iof ioi iol ioo ios iot iou is- isb isf isi isl iso iss ist isu itb itf iti itl ito its itt itu iu- iub iui ius iut lbb lbf lbi lbl lbo lbs lbt lbu lfb lff lfi lfl lfo lfs lft lfu lib lif lii lil lio lis lit liu llb llf lli lll llo lls llt llu lob lof loi lol loo los lot lou lsb lsf lsi lsl lso lss lst lsu ltb ltf lti ltl lto lts ltt ltu lub luf lui lul luo lus lut luu o-i ob- obb obf obi obl obo obs obt obu of- ofb off ofi ofl ofo ofs oft ofu oib oif oii oil oio ois oit oiu olb olf oli oll olo ols olt olu oo- oob oof ooi ool ooo oos oot os- osb osf osi osl oso oss ost osu ot- otb otf oti otl oto ots ott otu ou- ouf oui oul ouo ous out sbb sbf sbi sbl sbo sbs sbt sbu sfb sff sfi sfl sfo sfs sft sfu sib sif sii sil sio sis sit siu slb slf sli sll slo sls slt slu sob sof soi sol soo sos sot sou ss- ssb ssf ssi ssl sso sss sst ssu stb stf sti stl sto sts stt stu sub suf sui sul suo sus sut suu tbb tbf tbi tbl tbo tbs tbt tbu tfb tff tfi tfl tfo tfs tft tfu tib tif tii til tio tis tit tiu tlf tli tll tlo tls tlt tlu to- tob tof toi tol too tos tot tou tsb tsf tsi tsl tso tss tst tsu ttb ttf tti ttl tto tts ttt ttu tub tuf tui tul tuo tus tut tuu ubb ubf ubi ubl ubo ubs ubt ubu uff ufi ufl ufo ufs uft ufu uib uif uii uil uio uis uit uiu ulb ulf uli ull ulo uls ult ulu uob uol uoo uos uot usb usf usi usl uso uss ust usu utb utf uti utl uto uts utt utu uus uut uuu

-ous bbbb bbbs bblb bbls bffl bffs bfsi bfts bftt bibb bibi bibl bibo bibs biff bifi biis bili bill bilo bils bilt bilu bio- bioi biol bios biot biou bis- bisl biso biss bist bisu bito bits bitt bitu blbt blio blis blit blls blob bloo blot blou blss blst blts blub bluf blus blut bobb bobi bobo bobs bobu boff bofs bofu boi- boii boil bois boit boiu boli boll bolo bols bolt bolu boob boof bool boos boot bosi boso boss bost bosu botb boti boto bots bott bouf boul bous bout bsff bsfs bsos bsts btob btss bttb btus bubb bubi bubo bubs bubu buff bufo buif buis buit buiu bulb buli bull buls bult bulu buol busi buss bust busu but- buti buto buts butt buus fbis fbus ffff ffii ffss fftf fibs fiff fifi fifo fift fiii fiil fili fill filo fils fios fisi fiss fist fisu fiti fits fitt flii flis flit flob floo flos flot flou flts flub fluf fluo flus fobs fobt fofo foil fois foli foll folo fols folt foof fool foos foot fosb fosi foso foss fost foti foto fots fott foul fous fout fsfi fsfo fssf ft-l ftii ftlb ftos ftub fubb fubs fubu fuff fufu fuil fuit fuli full fuls fulu fusi fuso fuss fust fusu futi futo futs futu ibfi ibis ibos ibot ibsf ibss ibtb ibtl ibts ibus ifbb ifil ifis ifit ifsb ifso ifto iiii iiio iiis iiit iioi iioo iios iisi iist iisu iitt ilio ilis ilit ill- illi illo ills illt iloo ilos ilot ilts ilus ilut iobi ioii ioio ioit iolo ioof iooi iooo ioos ioso iosu iotf ioto ious isbl isbt isil isis isit isls iso- isof isol isos issf issi isso isss issu isti isto ists isus itbs itif itil itis itll itof itoi itol itoo itos itou itsf itsi itso itsu ittf itto iuiu iuss iust lbos lfts libo libs libu liff lifl lifo lift liii liis lilb lili lill lilo lils lilt lilu lio- lios lisi liso liss list lisu litb liti litl lito lits litt litu liuf lius liut llbs llll lloo lob- lobb lobi lobo lobs loff lofi loft loif lois loit loiu loli loll lolo lols loob loof lool loos loot losi loso loss lost loti lotl loto lots lott loui loul lous lout louu lsbu lsof lsso lsts ltbf ltbl ltib ltsi lubs luff luft lufu luif luis luit luli lull lulu lusi luso luss lust luti luts obbo obis obit obls oblu oboi obol obos obot obss obst obts obus off- offo offs offu ofit ofst ofus oiii oils oios oist oisu oiti olbo olfs olib olio olis olit olli ollo olof olos olot olsi olst oltu oobi ooff oofs oolo oooo ooos oosi oost ootb oots oous osii osis osli oslo osoi osoo osos ossb ossi osso ossu osti osts osul otbs otif otis otit oto- otof otoo otos otso otsu