bbb bbe bbi bbo bbs bbw bbx be- beb bee bei beo bes bew bex bi- bib bie bii bio bis biw bix bob boe boi boo bos bow box bsb bse bsi bso bss bsw bsx bwb bwi bwo bws bxb bxi bxo bxw bxx ebb ebe ebi ebo ebs ebw ebx eeb eee eeo ees eew eex eib eie eii eio eis eix eo- eob eoe eoi eoo eos eow es- esb ese esi eso ess esw esx ewb ewe ewi ewo ews eww ex- exe exi exo exs exw exx ibb ibe ibi ibo ibs ibw ibx ie- iee iei ies iex iib iie iii iio iis iiw iix io- iob ioe ioi ioo ios iow is- isb ise isi iso iss isw iwb iwe iwi iwo iws iww ixe ixi o-i ob- obb obe obi obo obs obw obx oeb oee oei oeo oes oex oib oie oii oio ois oo- oob ooi ooo oos oow oox os- osb ose osi oso oss osw osx owb owe owi owo ows oww ox- oxb oxi oxo oxx sbb sbe sbi sbo sbs sbw sbx se- seb see sei seo ses sew sex sib sie sii sio sis siw six sob soe soi soo sos sow sox ss- ssb sse ssi sso sss ssw ssx swb swe swi swo sws sxi sxs wbb wbe wbi wbo wbs wbw wbx web wee wei weo wes wew wex wib wie wii wis wix wob woe woi woo wos wow wox wsb wse wsi wso wss wsw wsx wwe wwi wwo www wxw xbe xbx xee xes xew xex xie xii xio xis xix xoi xoo xos xox xsb xsi xss xxi xxo xxx