a-a a-b a-c a-t aaa aab aac aan aao aar aat aax ab- aba abb abc abn abo abr abt abx ac- aca acb acc acn aco acr act acx an- ana anb anc ann ano anr ant anx aoa aob aoc aon aoo aor aot aox ar- ara arb arc arn aro arr art arx at- ata atb atc atn ato atr att atx ax- axa axn axo axr axt axx baa bab bac ban bao bar bat bax bba bbb bbc bbn bbo bbr bbt bbx bca bcb bcc bcn bco bcr bct bcx bna bnb bnc bnn bno bnr bnt bnx boa bob boc bon boo bor bot box bra brb brn bro brr brt brx bta btb btc btn bto btr btt btx bxb bxn bxo bxx c-- caa cab cac can cao car cat cax cba cbb cbc cbn cbo cbr cbt cbx cca ccb ccc ccn cco ccr cct ccx cn- cna cnb cnc cnn cno cnr cnt cnx co- coa cob coc con coo cor cot cox cra crb crc crn cro crr crt crx cta ctb ctc ctn cto ctr ctt ctx cxc cxo cxr cxt cxx naa nab nac nan nao nar nat nax nba nbb nbc nbn nbo nbr nbt nbx nca ncb ncc ncn nco ncr nct ncx nna nnb nnc nnn nno nnt no- noa nob noc non noo nor not nox nra nrb nrc nrn nro nrr nrt nrx nta ntb ntc ntn nto ntr ntt ntx nxc nxt oaa oab oac oan oao oar oat oax ob- oba obb obc obn obo obr obt obx oc- oca ocb occ ocn oco ocr oct ocx on- ona onb onc onn ono onr ont onx oo- ooa oob ooc oon ooo oor oot oox or- ora orb orc orn oro orr ort orx ot- ota otb otc otn oto otr ott ox- oxa oxb oxc oxn oxo oxt oxx ra- raa rab rac ran rao rar rat rax rba rbb rbc rbn rbo rbr rbt rbx rca rcb rcc rcn rco rcr rct rcx rna rnb rnc rnn rno rnr rnt roa rob roc ron roo ror rot rox rra rrb rrc rrn rrr rrt rta rtb rtc rtn rto rtr rtt rtx rxr t-x taa tab tac tan tao tar tat tax tba tbb tbc tbn tbo tbr tbt tca tcb tcc tcn tco tcr tct tcx tna tnb tnc tnn tno tnr tnt tnx to- toa tob toc ton too tor tot tox tra trb trc trn tro trr trt trx tta ttb ttc ttn tto ttr ttt ttx txn txt xaa xac xan xar xat xbc xbr xbx xcb xcr xcx xna xnc xno xoa xoc xon xoo xor xot xox xrc xrt xrx xtc xtr xtx xxo xxx

-ana aaaa aaab aaac aaan aaar aaba aabb aabc aabt aaca aacb aacc aacn aaco aacr aact aana aaon aaoo aara aarc aaro aart aata aatc aatt abaa abab abac aban abar abat abax abb- abba abbb abbo abbr abbt abca abcb abcc abcn abcr abct aboa abob abon aboo abor abot abox abra abrc abro abta ac-t acaa acab acac acan acar acat acba acca accc acco acct acoa acon acor acot acr- acra acrc acro acrr acta actc acto actt ana- anaa anab anac anan anao anar anat anax anba anbb anbo anca ancc anco anct anna annb anno annt ano- anoa anon anor anox anrc ant- anta anto antr antt aoba aoca aonb aono aont aora aorb aorn aort aotc arab arac aran arar arat arax arba arc- arca arco arct arna arno arnt aroa arob aron aroo aror arr- arra arrc arro arrr arrt arta artc arto artr artx at-t at-x ataa atab atac atan atar atat atax atca atcc atco atcr atna atno atob atoc aton ator atot atra atrc atrn atro atrx atta attn atto attr axan axar axat axo- axoa axon axto axxo ba-x baaa baan baar baat baba babb babo babr bac- baca bacc bacn baco bact bana banc bann bano banr bant baon bar- bara barb barc barn baro barr bart barx bata batc batn bato batt baxt bbbb bbox bbrc bcaa bcar bcat bcbc bcca bccc bcor bcra bctc bnoc bnor bnrr bnta boab boac boan boar boat boba bobb bobo boca boco bona bonc bonn bono bont boob booc boon boor boot boox bor- bora born boro borr bort bota botb botn boto bott boxa brab brac bran brao brat brax brca brcb brna brno broa brob broc bron broo bror brot brox brrr brtc btaa btan btcc btcx btob btor btrc btrt bttb c-bo caaa caab caac caan caat caba cabo cac- caca cacc caco cacr cana canc cann cano cant caor cara carb carc carn caro carr cart carx cat- cata catb catc cato catt caxa cbac cbar cbat cbax cbbc cbca cbcc cbcn cbcr cbct cbna cbot cbox cbrn cbrt cbta cbtc cbxa ccaa ccab ccac ccar ccat ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc ccnr ccob ccoc ccra ccrc ccrt cctb cctc cctt cnaa cnac cnbc cnco cnna cnrc cnrr cnrt cnta cntc cntr coan coat coax coba cobb cobo coca coco coct con- cona conc conn cono cont coob coon coot cor- cora corb corc corn coro corr cort cota cotb cotc cotn coto cott coxa crab crac cran crar crat crax crbc crca crcc crcr crna crob croc cron croo cror crot crrt crtc ctab ctan ctba ctca ctor ctot ctrc ctrn ctta cttn cxro cxxx naaa naab naac naan naar naat naba nabc nabo naca nacc naco nan- nana nanb nann nano nant naoc naor naot nara narc narn naro narr nart narx nata natc nato natt natx nbaa nbar nbbc nbbo nbca nbcc nbco ncaa ncac ncar ncat ncba ncbc ncca nccc nccn nccr ncct ncna ncnc ncoa ncoc ncor ncra ncrc ncta nctc nctr nnnn nnot nntn noaa noac noat noba nobc nobo noco noct non- nona nonn nono nont nonx noo- noob noon