bbb bbd bbe bbi bbo bbs bbx bdb bdd bde bdi bdo bds bdx be- beb bed bee bei beo bes bex bi- bib bid bie bii bio bis bix bob bod boe boi boo bos box bsb bsd bse bsi bso bss bsx bxb bxd bxi bxo bxx dbb dbd dbe dbi dbo dbs dbx ddb ddd dde ddi ddo dds ddx de- deb ded dee dei deo des dex di- dib did die dii dio dis dix dob dod doe doi doo dos dox dsb dsd dse dsi dso dss dsx dxd dxi dxo dxs dxx ebb ebd ebe ebi ebo ebs ebx ed- edb edd ede edi edo eds edx eeb eed eee eeo ees eex eib eid eie eii eio eis eix eo- eob eod eoe eoi eoo eos es- esb esd ese esi eso ess esx ex- exd exe exi exo exs exx i-d ibb ibd ibe ibi ibo ibs ibx idb idd ide idi ido ids idx ie- ied iee iei ies iex iib iid iie iii iio iis iix io- iob iod ioe ioi ioo ios is- isb isd ise isi iso iss ixe ixi o-i ob- obb obd obe obi obo obs obx odb odd ode odi odo ods oeb oed oee oei oeo oes oex oib oid oie oii oio ois oo- oob ood ooi ooo oos oox os- osb osd ose osi oso oss osx ox- oxb oxi oxo oxx sbb sbd sbe sbi sbo sbs sbx sdb sdd sde sdi sdo sds se- seb sed see sei seo ses sex sib sid sie sii sio sis six sob sod soe soi soo sos sox ss- ssb ssd sse ssi sso sss ssx sxi sxs xbe xbx xdb xde xdi xds xed xee xes xex xie xii xio xis xix xod xoi xoo xos xox xsb xsi xss xxi xxo xxx