bbb bbf bbh bbi bbo bbs bbx bfb bff bfh bfi bfo bfs bfx bhb bhf bhh bhi bho bhs bhx bi- bib bif bih bii bio bis bix bob bof boh boi boo bos box bsb bsf bsh bsi bso bss bsx bxb bxi bxo bxx fbb fbf fbh fbi fbo fbs fbx fff ffh ffi ffo ffs ffx fhb fhf fhh fhi fho fhs fib fif fih fii fis fix fob fof foh foi foo fos fox fsb fsf fsh fsi fso fss fsx fxi fxs fxx h-i hbb hbf hbh hbi hbo hbs hbx hfb hff hfh hfi hfo hfs hhb hhf hhh hhi hho hhs hib hif hih hii hio his hix hob hof hoh hoi hoo hos hox hsb hsf hsh hsi hss hsx i-f ibb ibf ibh ibi ibo ibs ibx ifb iff ifi ifo ifs ifx ihb ihf ihh ihi iho ihs iib iif iih iii iio iis iix io- iob iof ioh ioi ioo ios is- isb isf ish isi iso iss ixi o-i ob- obb obf obh obi obo obs obx of- ofb off ofi ofo ofs ofx ohf ohh ohi oho ohs oib oif oii oio ois oo- oob oof ooh ooi ooo oos oox os- osb osf osh osi oso oss osx ox- oxb oxf oxi oxo oxx sbb sbf sbh sbi sbo sbs sbx sfb sff sfh sfi sfo sfs sfx sh- shb shf shh shi sho shs sib sif sih sii sio sis six sob sof soh soi soo sos sox ss- ssb ssf ssh ssi sso sss ssx sxi sxs xbx xfh xfs xfx xii xio xis xix xof xoi xoo xos xox xsb xsi xss xxi xxo xxx