a-a a-b a-c aaa aab aac aak aan aao aar aas aaw ab- aba abb abc abk abn abo abr abs abw ac- aca acb acc ack acn aco acr acs acw aka akb akc akk akn ako akr aks akw an- ana anb anc ank ann ano anr ans aoa aob aoc aok aon aoo aor aos aow ar- ara arb arc ark arn aro arr ars arw as- asa asb asc ask asn aso asr ass asw aw- awa awb awc awk awn awo awr aws aww baa bab bac bak ban bao bar bas baw bba bbb bbc bbk bbn bbo bbr bbs bbw bca bcb bcc bck bcn bco bcr bcs bka bkb bkc bkk bkn bko bkr bks bkw bna bnb bnc bnk bnn bno bnr bns bnw boa bob boc bok bon boo bor bos bow bra brb brk brn bro brr brs brw bsa bsb bsc bsk bsn bso bsr bss bsw bwa bwb bwc bwk bwo bwr bws c-- caa cab cac cak can cao car cas caw cba cbb cbc cbk cbn cbo cbr cbs cbw cca ccb ccc cck ccn cco ccr ccs ccw cka ckb ckc cko cks ckw cn- cna cnb cnc cnn cno cnr cns cnw co- coa cob coc cok con coo cor cos cow cra crb crc crk crn cro crr crs crw csa csb csc csk csn cso csr css csw cw- cwa cwb cwc cwk cwn cwo cwr cws ka- kaa kab kac kak kan kao kar kas kaw kba kbb kbc kbk kbn kbo kbr kbs kbw kca kcb kcc kck kcn kcr kcs kkb kkc kkk kkn kkr kks kn- kna knc knk knn kno knr koa kob koc kok kon koo kor kos kow kra krc krk krn kro krr krs krw ksa ksb ksc ksk ksn kso ksr kss ksw kw- kwa kwc kwk kwo kws kww naa nab nac nak nan nao nar nas naw nba nbb nbc nbk nbn nbo nbr nbs nbw nca ncb ncc nck ncn nco ncr ncs ncw nka nkc nkk nkn nko nkr nks nna nnb nnc nnk nnn nno nns nnw no- noa nob noc nok non noo nor nos now nra nrb nrc nrk nrn nro nrr nrs nrw nsa nsb nsc nsk nsn nso nsr nss nsw nwa nwb nwc nwn nwo nwr nws oaa oab oac oak oan oao oar oas oaw ob- oba obb obc obk obn obo obr obs obw oc- oca ocb occ ock ocn oco ocr ocs ocw oka okb okc okk oko okr oks okw on- ona onb onc onk onn ono onr ons oo- ooa oob ooc ook oon ooo oor oos oow or- ora orb orc ork orn oro orr ors os- osa osb osc osk osn oso osr oss osw owa owb owc owk own owo ows oww ra- raa rab rac rak ran rao rar ras raw rba rbb rbc rbk rbn rbo rbr rbs rbw rca rcb rcc rcn rco rcr rcs rcw rkb rkc rkk rko rks rna rnb rnc rnn rno rnr rns rnw roa rob roc rok ron roo ror ros row rra rrb rrc rrk rrn rrr rrs rsa rsb rsc rsk rsn rso rsr rss rsw rwa rwb rwc rwr rws saa sab sac sak san sao sar sas saw sba sbb sbc sbk sbn sbo sbr sbs sbw sca scb scc sck scn sco scr scs scw sk- ska skb skc skk sko skr sks skw sna snb snc snk snn sno snr sns snw soa sob soc sok son soo sor sos sow sr- sra srb src srk srn sro srr srs srw ss- ssa ssb ssc ssk ssn sso ssr sss ssw swa swb swc swk swn swo swr sws waa wab wac wak wan wao war was waw wba wbb wbc wbn wbo wbr wbs wbw wca wcb wcc wck wcn wco wcr wcs wcw wka wkb wkc wko wkr wks wkw wn- wna wnc wnn wno wns wnw woa wob woc wok won woo wor wos wow wr- wra wrc wrk wrn wro wrr wrs wrw wsa wsb wsc wsk wsn wso wsr wss wsw wwa wwc wwn wwo www