a-a a-b a-c aaa aab aac aan aao aar aax ab- aba abb abc abn abo abr abx ac- aca acb acc acn aco acr acx an- ana anb anc ann ano anr anx aoa aob aoc aon aoo aor aox ar- ara arb arc arn aro arr arx ax- axa axn axo axr axx baa bab bac ban bao bar bax bba bbb bbc bbn bbo bbr bbx bca bcb bcc bcn bco bcr bcx bna bnb bnc bnn bno bnr bnx boa bob boc bon boo bor box bra brb brn bro brr brx bxb bxn bxo bxx c-- caa cab cac can cao car cax cba cbb cbc cbn cbo cbr cbx cca ccb ccc ccn cco ccr ccx cn- cna cnb cnc cnn cno cnr cnx co- coa cob coc con coo cor cox cra crb crc crn cro crr crx cxc cxo cxr cxx naa nab nac nan nao nar nax nba nbb nbc nbn nbo nbr nbx nca ncb ncc ncn nco ncr ncx nna nnb nnc nnn nno no- noa nob noc non noo nor nox nra nrb nrc nrn nro nrr nrx nxc oaa oab oac oan oao oar oax ob- oba obb obc obn obo obr obx oc- oca ocb occ ocn oco ocr ocx on- ona onb onc onn ono onr onx oo- ooa oob ooc oon ooo oor oox or- ora orb orc orn oro orr orx ox- oxa oxb oxc oxn oxo oxx ra- raa rab rac ran rao rar rax rba rbb rbc rbn rbo rbr rbx rca rcb rcc rcn rco rcr rcx rna rnb rnc rnn rno rnr roa rob roc ron roo ror rox rra rrb rrc rrn rrr rxr xaa xac xan xar xbc xbr xbx xcb xcr xcx xna xnc xno xoa xoc xon xoo xor xox xrc xrx xxo xxx

-ana aaaa aaab aaac aaan aaar aaba aabb aabc aaca aacb aacc aacn aaco aacr aana aaon aaoo aara aarc aaro abaa abab abac aban abar abax abb- abba abbb abbo abbr abca abcb abcc abcn abcr aboa abob abon aboo abor abox abra abrc abro acaa acab acac acan acar acba acca accc acco acoa acon acor acr- acra acrc acro acrr ana- anaa anab anac anan anao anar anax anba anbb anbo anca ancc anco anna annb anno ano- anoa anon anor anox anrc aoba aoca aonb aono aora aorb aorn arab arac aran arar arax arba arc- arca arco arna arno aroa arob aron aroo aror arr- arra arrc arro arrr axan axar axo- axoa axon axxo ba-x baaa baan baar baba babb babo babr bac- baca bacc bacn baco bana banc bann bano banr baon bar- bara barb barc barn baro barr barx bbbb bbox bbrc bcaa bcar bcbc bcca bccc bcor bcra bnoc bnor bnrr boab boac boan boar boba bobb bobo boca boco bona bonc bonn bono boob booc boon boor boox bor- bora born boro borr boxa brab brac bran brao brax brca brcb brna brno broa brob broc bron broo bror brox brrr c-bo caaa caab caac caan caba cabo cac- caca cacc caco cacr cana canc cann cano caor cara carb carc carn caro carr carx caxa cbac cbar cbax cbbc cbca cbcc cbcn cbcr cbna cbox cbrn cbxa ccaa ccab ccac ccar ccba ccbc ccbn ccca cccb cccc ccna ccnb ccnc ccnr ccob ccoc ccra ccrc cnaa cnac cnbc cnco cnna cnrc cnrr coan coax coba cobb cobo coca coco con- cona conc conn cono coob coon cor- cora corb corc corn coro corr coxa crab crac cran crar crax crbc crca crcc crcr crna crob croc cron croo cror cxro cxxx naaa naab naac naan naar naba nabc nabo naca nacc naco nan- nana nanb nann nano naoc naor nara narc narn naro narr narx nbaa nbar nbbc nbbo nbca nbcc nbco ncaa ncac ncar ncba ncbc ncca nccc nccn nccr ncna ncnc ncoa ncoc ncor ncra ncrc nnnn noaa noac noba nobc nobo noco non- nona nonn nono nonx noo- noob noon nooo noor nor- nora norb norc norn noro norr noxa nrab nrca nrna nroc nron nrrc oara oban obba obbo obon obor obox obra obro ocab ocac ocan ocbc occa occc occn ocna ocon ocra ocro ocrr onab onan onar onc- onca onco onna onno onon onor onra ooaa ooba oocr oona oooo oora orab orac oran orao orar orba orbb orbo orca orco orna ornc orno oro- oron oror orra orro oxa- oxan oxna oxo- oxon oxox oxxo raab raan raba rabb rabo rac- raca racc raco rana ranc rann rano ranx raob raoc rara rarb raro raxa rbbb rbbr rcac rcbc rcbo rccb rccc rcnr rcon rnbr rnco roab roan roar rob- roba robb robo roca rocc roco rona ronc rono roob roon roor roox rora rorc roro roxa roxo rrna rrrr xaar xana xano xara xbar xbox xbra xcon xoan xobc xoca xoco xorn xoro xoxo xxxo xxxx

-aaa- a-box aaaoc aaarc aabaa aabba aabra aacbc aarna aaron abaab ababa abaca abaco abana abanc abann abano abaon abara abarn abbac abban abbar abcan abccc aboab abobo abona abono aboon abora aborc aborn abrac abran abrar abron acaca acacb acana acar- acara accra acnor acorn acrab acro- acrob acron anaba anaco anana anara anaxo anban anbar ancar ancon ancor annan annar annax anncr anoba anona anono anoon anora anorn anrax ar-ab ara-c arab- araba arabo araca araco arana aranc arano arara araxa arbab arbar arbon arbor arcan arcoa arcon arcor arnac arnan arnar arno- arnon arnor aroab aroar aroba arona aroon aroor arora arran arron arxan axana axona baarn baban babar babax baboo babra bacab bacao bacar bacax bacca bacco bacon banan banar banba banca banco banna banon baoro bar-x baraa barab barac baran barao barar barba barca barco barna baro- baroa baron baroo baror barra barro bo-bo boaco boann boano boaro bobac boban bobar boboc bobr bocac bocao bocar bocca bocna bocoa bocon bocor bonab bonan bonao bonar bonon bonox booba booco boora boorn