b-u bbb bbd bbe bbi bbo bbs bbu bbx bdb bdd bde bdi bdo bds bdu bdx be- beb bed bee bei beo bes beu bex bi- bib bid bie bii bio bis biu bix bob bod boe boi boo bos bou box bsb bsd bse bsi bso bss bsu bsx bub bud bue bui buo bus buu bux bxb bxd bxi bxo bxx dbb dbd dbe dbi dbo dbs dbu dbx ddb ddd dde ddi ddo dds ddu ddx de- deb ded dee dei deo des deu dex di- dib did die dii dio dis diu dix dob dod doe doi doo dos dou dox dsb dsd dse dsi dso dss dsu dsx dub dud due dui duo dus dux dxd dxi dxo dxs dxx ebb ebd ebe ebi ebo ebs ebu ebx ed- edb edd ede edi edo eds edu edx eeb eed eee eeo ees eex eib eid eie eii eio eis eiu eix eo- eob eod eoe eoi eoo eos eou es- esb esd ese esi eso ess esu esx eu- eub eud eue eui eus eux ex- exd exe exi exo exs exu exx i-d ibb ibd ibe ibi ibo ibs ibu ibx idb idd ide idi ido ids idu idx ie- ied iee iei ies iex iib iid iie iii iio iis iiu iix io- iob iod ioe ioi ioo ios iou is- isb isd ise isi iso iss isu iu- iub iud iue iui ius ixe ixi o-i ob- obb obd obe obi obo obs obu obx odb odd ode odi odo ods odu oeb oed oee oei oeo oes oex oib oid oie oii oio ois oiu oo- oob ood ooi ooo oos oox os- osb osd ose osi oso oss osu osx ou- oud oue oui ouo ous ox- oxb oxi oxo oxx sbb sbd sbe sbi sbo sbs sbu sbx sdb sdd sde sdi sdo sds sdu se- seb sed see sei seo ses seu sex sib sid sie sii sio sis siu six sob sod soe soi soo sos sou sox ss- ssb ssd sse ssi sso sss ssu ssx sub sud sue sui suo sus suu sux sxi sxs sxu ubb ube ubi ubo ubs ubu ubx udb udd ude udi udo uds udu udx ueb ued uee uei ues uib uid uie uii uio uis uiu uob uod uoe uoo uos uox usb usd use usi uso uss usu usx uue uus uuu uxb uxo uxu xbe xbx xdb xde xdi xds xed xee xes xeu xex xie xii xio xis xiu xix xod xoi xoo xos xox xsb xsi xss xue xui xus xxi xxo xxx