a-a a-b a-c aaa aab aac aad aak aao aaw ab- aba abb abc abd abk abo abw ac- aca acb acc acd ack aco acw ad- ada adb adc add adk ado adw aka akb akc akd akk ako akw aoa aob aoc aod aok aoo aow aw- awa awb awc awd awk awo aww baa bab bac bad bak bao baw bba bbb bbc bbd bbk bbo bbw bca bcb bcc bcd bck bco bda bdb bdc bdd bdk bdo bdw bka bkb bkc bkk bko bkw boa bob boc bod bok boo bow bwa bwb bwc bwd bwk bwo c-- caa cab cac cad cak cao caw cba cbb cbc cbd cbk cbo cbw cca ccb ccc ccd cck cco ccw cda cdb cdc cdd cdk cdo cdw cka ckb ckc ckd cko ckw co- coa cob coc cod cok coo cow cw- cwa cwb cwc cwd cwk cwo daa dab dac dad dak dao daw dba dbb dbc dbd dbk dbo dca dcb dcc dcd dck dco dcw dda ddb ddc ddd ddk ddo ddw dka dkb dkc dkk dko dkw doa dob doc dod dok doo dow dwa dwb dwc dwo dww ka- kaa kab kac kad kak kao kaw kba kbb kbc kbd kbk kbo kbw kca kcb kcc kcd kck kda kdb kdc kdk kdo kkb kkc kkk koa kob koc kod kok koo kow kw- kwa kwc kwd kwk kwo kww oaa oab oac oad oak oao oaw ob- oba obb obc obd obk obo obw oc- oca ocb occ ocd ock oco ocw oda odb odc odd odo oka okb okc okd okk oko okw oo- ooa oob ooc ood ook ooo oow owa owb owc owd owk owo oww waa wab wac wad wak wao waw wba wbb wbc wbd wbo wbw wca wcb wcc wcd wck wco wcw wda wdb wdc wka wkb wkc wkd wko wkw woa wob woc wod wok woo wow wwa wwc wwd wwo www

a-ak a-do a-ok a-wa aaaa aaab aaac aaad aaba aabb aabc aabd aabw aaca aacb aacc aacd aack aaco aada aadc aaka aaoo aaow aaww abaa abab abac abad abak abaw abb- abba abbb abbo abca abcb abcc abcd abcw abda abdo aboa abob abod abok aboo abow abwa acaa acab acac acad acba acca accc accd acco acda acdb acdc ackd ackw acoa acod acow acwa acww adaa adab adac adad adak adao adaw adba adbc adcc adda addc addd addo adob adoc adod adok adoo adwa akaa akao akca akka akko akok akwa aoba aoca aowd awac awad awka awoo awow awwa baaa baad baak baba babb babo bac- baca bacc back baco bada badb badd bado bak- baka bako baw- bawd bawk bbad bbbb bbdd bbdo bbwc bcaa bcbc bcca bccc bcda bdbc bddc boab boac boad boak boba bobb bobo bobw boca bock boco boda bodb bodo boka boko boob booc bood book boow bowa bowd bowk bwaa bwoc c-bo c-cd caaa caab caac caba cabo cac- caca cacc cack caco cacw cada cadc cadd cado cadw caka caod cawk cbac cbbc cbca cbcc cbdb cbdc cbdo cbka cbko cbwa cbwd ccaa ccab ccac ccad ccba ccbc ccca cccb cccc ccdc cckw ccob ccoc ccod ccow cdaa cdac cdad cdba cdda cddb ckac ckbc ckck ckco ckcw ckdo ckoa ckob ckoc ckoo ckwd ckww coad coak coba cobb cobo coca cock coco coda codd cok- coka coko coob cood cook cowd cwac d-bo daab daad daba dabb dabo daca dada dado daka dako dawa dawd dawk dawo dbcc dcbc dcca dccb dccc dcdb dddd ddoc dkba dkdc doab doak doba dobb doca dock doco dod- doda dodd dodo doka doko doob dood dook dowa dowb dowd dowk dwac dwad dwcw dwdd dwkc dwok dwww kaaa kaab kaak kaba kabb kabc kabd kabo kabw kacb kacc kacd kaco kacw kad- kada kadd kado kaka kakc kakk kako kaoa kaoc kaok kaow kaw- kawa kawc kawk kawo kaww kbaa kbab kbac kbad kbak kbba kbbb kbbc kbbd kbbk kbbo kbbw kbca kbcb kbck kbco kbcw kbdb kbdo kbkb kbkk kbko kbkw kboa kbob kboc kbod kbok kboo kbow kbwa kbwb kbwc kbwd kbww kcaa kcab kcac kcad kcaw kcba kcbc kcbd kcbk kcbw kcca kccb kccc kccd kcck kcda kcdc kcdd kckc kckk kcko kcob kcow kcwa kcwb kcwc kcwd kcwk kdaa kdab kdac kdad kdak kdao kdbb kdca kdcc kdcd kdco kddb kddc kddd kddk kdka kdkb kdkd kdkk kdko kdoc kdok kdow kdwa kdwd kkaa kkac kkaw kkba kkbb kkbd kkbo kkcb kkcd kkck kkco kkcw kkda kkdc kkdd kkdo kkkk kkoa kkob kkoo kkow kkwb kkwd kkwk koab koac koak koba kobb kobc kobk kobo koca kocb kocd kock kocw koda kodk kodo koka kokb kokc kokk koko koob kooc kook kooo kowa kowb kowd kwab kwac kwad kwak kwaw kwbc kwbw kwca kwcd kwck kwdc kwdd kwdk kwdw kwka kwkb kwkc kwkk kwkw kwoa kwoc kwod kwok kwow kwwk obad obak obba obbo obkb obok ocab ocac ocad ocak ocbc occa occc odac odbo odda oddd odoo okak okka okko okok ooaa ooak ooba ooda oooo owda owow owwa waaa waac waad waao waaw waba wabb wabc wabd wabk wabo wabw waca wacb wacc wacd wack waco wada wadb wadc wadd wadk wado waka wakb wakd wakk wako wakw waob waoc waok waoo waow wawa wawb wawc wawd wawk wawo wbaa wbab wbac wbad wbak wbbb wbbd wbbk wbbo wbbw wbca wbcb wbck wbco wbcw wbdc wbdk wbka wbkb wbkk wbko wbkw wbob wboc wbok wbow wbwb wbwc wbwo wcab wcad wcao wcba wcbc wcbd wcbw wcca wccb wccc wccd wcck wcco wccw wcda wcdb wcdc wcdd wcdk wcdo wcdw wcka wckb wckk wckw wcoa wcob wcoc wcok wcoo wcwa wcwb wcwc wdab wdac wdad wdak wdao wdba wdbc wdbd wdbk wdbo wdca wdcb wdcc wdcd wdck wdco wdcw wddc wddd wddk wddo wddw wdka wdkb wdkc wdkd wdkw wdoc wdod wdok wdow wdwd wkaa wkac wkad wkak wkao wkba wkbc wkbk wkbo wkbw