-ol b-u bbb bbf bbi bbl bbo bbt bbu bfb bff bfi bfl bfo bft bfu bi- bib bif bii bil bio bit biu blb blf bli bll blo blt blu bob bof boi bol boo bot bou btb btf bti btl bto btt btu bub buf bui bul buo but buu fbb fbf fbi fbl fbo fbt fbu fff ffi ffl ffo fft ffu fib fif fii fil fit fiu flb flf fli fll flo flt flu fob fof foi fol foo fot fou ftb ftf fti ftl fto ftt ftu fub fuf fui ful fuo fut fuu i-f ibb ibf ibi ibl ibo ibt ibu ifb iff ifi ifl ifo ift ifu iib iif iii iil iio iit iiu il- ilb ilf ili ill ilo ilt ilu io- iob iof ioi iol ioo iot iou itb itf iti itl ito itt itu iu- iub iui iut lbb lbf lbi lbl lbo lbt lbu lfb lff lfi lfl lfo lft lfu lib lif lii lil lio lit liu llb llf lli lll llo llt llu lob lof loi lol loo lot lou ltb ltf lti ltl lto ltt ltu lub luf lui lul luo lut luu o-i ob- obb obf obi obl obo obt obu of- ofb off ofi ofl ofo oft ofu oib oif oii oil oio oit oiu olb olf oli oll olo olt olu oo- oob oof ooi ool ooo oot ot- otb otf oti otl oto ott otu ou- ouf oui oul ouo out tbb tbf tbi tbl tbo tbt tbu tfb tff tfi tfl tfo tft tfu tib tif tii til tio tit tiu tlf tli tll tlo tlt tlu to- tob tof toi tol too tot tou ttb ttf tti ttl tto ttt ttu tub tuf tui tul tuo tut tuu ubb ubf ubi ubl ubo ubt ubu uff ufi ufl ufo uft ufu uib uif uii uil uio uit uiu ulb ulf uli ull ulo ult ulu uob uol uoo uot utb utf uti utl uto utt utu uut uuu