a-a a-b a-c aaa aab aac aad aak aao aas aaw aay ab- aba abb abc abd abk abo abs abw aby ac- aca acb acc acd ack aco acs acw acy ad- ada adb adc add adk ado ads adw ady aka akb akc akd akk ako aks akw aoa aob aoc aod aok aoo aos aow as- asa asb asc asd ask aso ass asw asy aw- awa awb awc awd awk awo aws aww awy ay- aya ayc ayd ayk ayo ays ayw baa bab bac bad bak bao bas baw bay bba bbb bbc bbd bbk bbo bbs bbw bby bca bcb bcc bcd bck bco bcs bcy bda bdb bdc bdd bdk bdo bds bdw bdy bka bkb bkc bkk bko bks bkw boa bob boc bod bok boo bos bow boy bsa bsb bsc bsd bsk bso bss bsw bsy bwa bwb bwc bwd bwk bwo bws bwy by- bya byc byd byk byo bys c-- caa cab cac cad cak cao cas caw cay cba cbb cbc cbd cbk cbo cbs cbw cby cca ccb ccc ccd cck cco ccs ccw cda cdb cdc cdd cdk cdo cds cdw cdy cka ckb ckc ckd cko cks ckw cky co- coa cob coc cod cok coo cos cow coy csa csb csc csd csk cso css csw csy cw- cwa cwb cwc cwd cwk cwo cws cya cyb cyc cyd cyk cyo cys cyw daa dab dac dad dak dao das daw day dba dbb dbc dbd dbk dbo dbs dby dca dcb dcc dcd dck dco dcs dcw dda ddb ddc ddd ddk ddo dds ddw ddy dka dkb dkc dkk dko dks dkw doa dob doc dod dok doo dos dow doy dsa dsb dsc dsd dsk dso dss dsw dsy dwa dwb dwc dwo dws dww dy- dya dyb dyc dyd dyk dyo dys dyw dyy ka- kaa kab kac kad kak kao kas kaw kay kba kbb kbc kbd kbk kbo kbs kbw kca kcb kcc kcd kck kcs kda kdb kdc kdk kdo kds kdy kkb kkc kkk kks kky koa kob koc kod kok koo kos kow koy ksa ksb ksc ksd ksk kso kss ksw kw- kwa kwc kwd kwk kwo kws kww kya kyc kyd kyo kys kyw oaa oab oac oad oak oao oas oaw ob- oba obb obc obd obk obo obs obw oby oc- oca ocb occ ocd ock oco ocs ocw oda odb odc odd odo ods oka okb okc okd okk oko oks okw oo- ooa oob ooc ood ook ooo oos oow os- osa osb osc osd osk oso oss osw owa owb owc owd owk owo ows oww oya oyd oyo oys saa sab sac sad sak sao sas saw say sba sbb sbc sbd sbk sbo sbs sbw sby sca scb scc scd sck sco scs scw sda sdb sdc sdd sdk sdo sds sdw sdy sk- ska skb skc skd skk sko sks skw sky soa sob soc sod sok soo sos sow soy ss- ssa ssb ssc ssd ssk sso sss ssw swa swb swc swd swk swo sws swy sy- sya syb syc syd syk sys waa wab wac wad wak wao was waw way wba wbb wbc wbd wbo wbs wbw wca wcb wcc wcd wck wco wcs wcw wda wdb wdc wds wdy wka wkb wkc wkd wko wks wkw wky woa wob woc wod wok woo wos wow woy wsa wsb wsc wsd wsk wso wss wsw wwa wwc wwd wwo www wy- wya wyc wyd wyk wyo wys yaa yab yac yad yak yao yas yaw yay ybc ybs yby yca ycc ycd yco ycs ycw ycy yda ydo yds ydy yka ykk yob yoc yod yok yoo yos yow yoy ysa ysb ysc ysk yso yss ysy ywc yyb yyc yys yyy