a-a a-b a-c a-t aaa aab aac aak aao aar aat aaw ab- aba abb abc abk abo abr abt abw ac- aca acb acc ack aco acr act acw aka akb akc akk ako akr akw aoa aob aoc aok aoo aor aot aow ar- ara arb arc ark aro arr art arw at- ata atb atc ato atr att atw aw- awa awb awc awk awo awr awt aww baa bab bac bak bao bar bat baw bba bbb bbc bbk bbo bbr bbt bbw bca bcb bcc bck bco bcr bct bka bkb bkc bkk bko bkr bkt bkw boa bob boc bok boo bor bot bow bra brb brk bro brr brt brw bta btb btc btk bto btr btt btw bwa bwb bwc bwk bwo bwr c-- caa cab cac cak cao car cat caw cba cbb cbc cbk cbo cbr cbt cbw cca ccb ccc cck cco ccr cct ccw cka ckb ckc cko ckt ckw co- coa cob coc cok coo cor cot cow cra crb crc crk cro crr crt crw cta ctb ctc ctk cto ctr ctt ctw cw- cwa cwb cwc cwk cwo cwr cwt k-t ka- kaa kab kac kak kao kar kat kaw kba kbb kbc kbk kbo kbr kbw kca kcb kcc kck kcr kct kkb kkc kkk kkr kkt koa kob koc kok koo kor kot kow kra krc krk kro krr krt krw kta ktb ktc ktk kto ktr ktt ktw kw- kwa kwc kwk kwo kwt kww oaa oab oac oak oao oar oat oaw ob- oba obb obc obk obo obr obt obw oc- oca ocb occ ock oco ocr oct ocw oka okb okc okk oko okr okw oo- ooa oob ooc ook ooo oor oot oow or- ora orb orc ork oro orr ort ot- ota otb otc otk oto otr ott otw owa owb owc owk owo owt oww ra- raa rab rac rak rao rar rat raw rba rbb rbc rbk rbo rbr rbt rbw rca rcb rcc rco rcr rct rcw rkb rkc rkk rko rkt roa rob roc rok roo ror rot row rra rrb rrc rrk rrr rrt rta rtb rtc rtk rto rtr rtt rtw rwa rwb rwc rwr taa tab tac tak tao tar tat taw tba tbb tbc tbk tbo tbr tbt tca tcb tcc tck tco tcr tct tcw tka tkb tkc tkk tko tkr tkt tkw to- toa tob toc tok too tor tot tow tra trb trc trk tro trr trt trw tta ttb ttc ttk tto ttr ttt ttw twa twb twc two twr twt tww waa wab wac wak wao war wat waw wba wbb wbc wbo wbr wbt wbw wca wcb wcc wck wco wcr wct wcw wka wkb wkc wko wkr wkt wkw woa wob woc wok woo wor wot wow wr- wra wrc wrk wro wrr wrt wrw wta wtb wtc wto wtr wtt wtw wwa wwc wwo wwt www