a-a a-b aaa aab aad aaf aar aas aau aaw ab- aba abb abd abf abr abs abu abw ad- ada adb add adf adr ads adu adw af- afa afb afd aff afr afs afu afw ar- ara arb ard arf arr ars aru arw as- asa asb asd asf asr ass asu asw au- aua aub aud auf aur aus auw aw- awa awb awd awf awr aws awu aww b-u baa bab bad baf bar bas bau baw bba bbb bbd bbf bbr bbs bbu bbw bda bdb bdd bdf bdr bds bdu bdw bfa bfb bfd bff bfr bfs bfu bra brb brd brf brr brs bru brw bsa bsb bsd bsf bsr bss bsu bsw bua bub bud buf bur bus buu buw bwa bwb bwd bwf bwr bws bwu daa dab dad daf dar das dau daw dba dbb dbd dbf dbr dbs dbu dda ddb ddd ddf ddr dds ddu ddw dfa dfb dfd dff dfr dfs dfu dfw dra drb drd drr drs dru drw dsa dsb dsd dsf dsr dss dsu dsw dua dub dud duf dur dus dwa dwb dwf dwr dws dwu dww faa fab fad faf far fas fau faw fba fbb fbd fbf fbr fbs fbu fbw fda fdb fdd fdf fdr fds fdu ffa ffd fff ffr ffs ffu ffw fra frb frd frf frr frs fru frw fsa fsb fsd fsf fsr fss fsu fsw fua fub fud fuf fur fus fuu fwa fwb fwd fwf fws ra- raa rab rad raf rar ras rau raw rba rbb rbd rbf rbr rbs rbu rbw rda rdb rdd rdf rdr rds rdu rfa rfb rfd rff rfr rfs rfu rfw rra rrb rrd rrf rrr rrs rru rsa rsb rsd rsf rsr rss rsu rsw rua rub rud ruf rur rus ruu rwa rwb rwd rwf rwr rws rwu saa sab sad saf sar sas sau saw sba sbb sbd sbf sbr sbs sbu sbw sda sdb sdd sdf sdr sds sdu sdw sfa sfb sfd sff sfr sfs sfu sfw sr- sra srb srd srf srr srs srw ss- ssa ssb ssd ssf ssr sss ssu ssw sua sub sud suf sur sus suu suw swa swb swd swf swr sws swu ua- uaa uab uad uaf uar uas uau uaw uba ubb ubf ubr ubs ubu ubw uda udb udd udf udr uds udu ufa ufd uff ufr ufs ufu ufw ur- ura urb urd urf urr urs uru urw usa usb usd usf usr uss usu usw uua uur uus uuu uwa uwb uwf uwr uws uww waa wab wad waf war was wau waw wba wbb wbd wbf wbr wbs wbw wda wdb wdf wdr wds wdu wfa wfb wfd wff wfr wfs wfu wfw wr- wra wrd wrf wrr wrs wru wrw wsa wsb wsd wsf wsr wss wsu wsw wua wub wud wur wus wwa wwd wwf wwu www