-ol bbb bbi bbl bbo bbs bbw bi- bib bii bil bio bis biw blb bli bll blo bls bob boi bol boo bos bow bsb bsi bsl bso bss bsw bwb bwi bwl bwo bws ibb ibi ibl ibo ibs ibw iib iii iil iio iis iiw il- ilb ili ill ilo ils io- iob ioi iol ioo ios iow is- isb isi isl iso iss isw iwb iwi iwl iwo iws iww lbb lbi lbl lbo lbs lbw lib lii lil lio lis liw llb lli lll llo lls llw lob loi lol loo los low lsb lsi lsl lso lss lsw lwb lwi lwl lwo lws lww o-i ob- obb obi obl obo obs obw oib oii oil oio ois olb oli oll olo ols olw oo- oob ooi ool ooo oos oow os- osb osi osl oso oss osw owb owi owl owo ows oww sbb sbi sbl sbo sbs sbw sib sii sil sio sis siw slb sli sll slo sls sob soi sol soo sos sow ss- ssb ssi ssl sso sss ssw swb swi swl swo sws wbb wbi wbo wbs wbw wib wii wil wis wl- wlb wli wll wlo wls wlw wob woi wol woo wos wow wsb wsi wsl wso wss wsw wwi wwl wwo www