-ol b-u bbb bbf bbl bbo bbu bbw bfb bff bfl bfo bfu blb blf bll blo blu bob bof bol boo bou bow bub buf bul buo buu buw bwb bwf bwl bwo bwu fbb fbf fbl fbo fbu fbw fff ffl ffo ffu ffw flb flf fll flo flu flw fob fof fol foo fou fow fub fuf ful fuo fuu fwb fwf fwl fwo lbb lbf lbl lbo lbu lbw lfb lff lfl lfo lfu llb llf lll llo llu llw lob lof lol loo lou low lub luf lul luo luu lwb lwl lwo lww ob- obb obf obl obo obu obw of- ofb off ofl ofo ofu ofw olb olf oll olo olu olw oo- oob oof ool ooo oow ou- ouf oul ouo owb owf owl owo owu oww ubb ubf ubl ubo ubu ubw uff ufl ufo ufu ufw ulb ulf ull ulo ulu uob uol uoo uow uuu uwb uwf uwl uww wbb wbf wbo wbw wfb wff wfl wfo wfu wfw wl- wlb wlf wll wlo wlu wlw wob wof wol woo wou wow wub wuo wwf wwl wwo wwu www