-al -ol a-a a-b a-c aaa aab aac aal aao aar aax ab- aba abb abc abl abo abr abx ac- aca acb acc acl aco acr acx al- ala alb alc all alo alr alx aoa aob aoc aol aoo aor aox ar- ara arb arc arl aro arr arx ax- axa axl axo axr axx baa bab bac bal bao bar bax bba bbb bbc bbl bbo bbr bbx bca bcb bcc bcl bco bcr bcx bla blb blc bll blo blr blx boa bob boc bol boo bor box bra brb brl bro brr brx bxb bxl bxo bxx c-- caa cab cac cal cao car cax cba cbb cbc cbl cbo cbr cbx cca ccb ccc ccl cco ccr ccx cl- cla clb clc cll clo clr clx co- coa cob coc col coo cor cox cra crb crc crl cro crr crx cxc cxl cxo cxr cxx la- laa lab lac lal lao lar lax lba lbb lbc lbl lbo lbr lbx lca lcb lcc lcl lco lcr lcx lla llb llc lll llo llr loa lob loc lol loo lor lox lra lrb lrc lro lrr lxc lxo lxr lxx oaa oab oac oal oao oar oax ob- oba obb obc obl obo obr obx oc- oca ocb occ ocl oco ocr ocx ola olb olc oll olo oo- ooa oob ooc ool ooo oor oox or- ora orb orc orl oro orr orx ox- oxa oxb oxc oxo oxx ra- raa rab rac ral rao rar rax rba rbb rbc rbl rbo rbr rbx rca rcb rcc rcl rco rcr rcx rla rlc rll rlo rlr roa rob roc rol roo ror rox rra rrb rrc rrl rrr rxr xaa xac xal xar xbc xbl xbr xbx xcb xcl xcr xcx xla xlb xlr xoa xoc xoo xor xox xrc xrx xxl xxo xxx

aaaa aaab aaac aaal aaar aaba aabb aabc aabl aaca aacb aacc aacl aaco aacr aala aalc aall aalo aaoo aara aarc aaro abaa abab abac abal abar abax abb- abba abbb abbo abbr abca abcb abcc abcl abcr abla ablo aboa abob abol aboo abor abox abra abrc abro acaa acab acac acar acba acbl acca accc acco acla aclc aclr acoa acol acor acr- acra acrc acro acrr alaa alac alal alao alar alb- alba albc albo alca alcc alco all- alla alll allo allr aloa aloc alol aloo alor alro alxa aoba aoca aola aora aorb arab arac aral arar arax arba arc- arca arco arla arlo aroa arob aroo aror arr- arra arrc arro arrr axal axar axo- axoa axxo ba-x baaa baal baar baba babb babo babr bac- baca bacc baco bala balc ball balo baol bar- bara barb barc baro barr barx bbbb bblb bbox bbrc bcaa bcar bcbc bcca bccc bccl bcor bcra blaa blab blac blob bloc bloo blrc boab boac boal boar boba bobb bobo boca boco bola boll bolo boob booc bool boor boox bor- bora boro borr boxa brab brac brao brax brca brcb broa brob broc brol broo bror brox brrr c-bo caaa caab caac caal caba cabo cac- caca cacc caco cacr cala calc call calo calx caol caor cara carb carc carl caro carr carx caxa cbac cbal cbar cbax cbbc cbca cbcc cbcl cbcr cblb cblc cbol cbox cbrl cbxa ccaa ccab ccac ccar ccba ccbc ccca cccb cccc cccl ccla cclc cclx ccob ccoc ccra ccrc ccrl ccxl clab clar clob cloo clor clox clra clro clxx coal coax coba cobb cobo coca coco col- cola colb coll colo coob cool cor- cora corb corc corl coro corr coxa crab crac crar crax crbc crca crcc crcr crob croc crol croo cror cxro cxxx laaa laac laal laar laax laba labo labr laca lacc lacl laco lala lall lalo lara larb larc larr laxa laxo lbar lbcc lblr lcac lcbc lcca lccc lcor lcra lcrl llao llcc lllc llll lloa lloc lloo loac loar lob- loba lobb lobo loca locc loco lola loll lolo loob looc lool loor lora loro lox- loxa loxo lrac lral lrba lroc lrrc lrrr lxra lxxx oall oara obal obba obbo obla obol obor obox obra obro ocab ocac ocal ocbc occa occc oclc ocra ocrl ocro ocrr olac olar olax olba olbo olca olcc olla ollo olor ooaa ooba oocr oola oolo oooo oora orab orac oral orao orar orba orbb orbo orca orco orla orlo oro- oror orra orro oxa- oxal oxo- oxox oxxo raab raba rabb rabl rabo rac- raca racc raco rala ralb rall ralo raob raoc raol rara rarb raro raxa rbbb rbbr rbcl rcac rcbc rcbo rccb rccc rlab roab roar rob- roba robb robo roca rocc roco rola roll rolo roob rool roor roox rora rorc roro roxa roxo rrrr xaar xacl xala xall xara xbar xbox xbra xbrl xcal xcbl xloc xlox xobc xoca xoco xolo xoro xoxo xxxo xxxx

-aaa- a-box a-l-x aaaoc aaarc aabaa aabba aabra aacbc abaab ababa abaca abaco abala aball abalo abara abbac abbar abccc aboab abobl abobo abora aborc abrac abrar abrol acaca acacb acala acall acar- acara accra aclla acoal acool acrab acral acro- acrob alaba alaca alala alaol alara albac albal albar albo- albor albox alco- alcoa alcor alcra allal allar allbo allo- alloa alloo allor allra aloba aloor alora ar-ab ara-c arab- araba arabo araca araco arara araxa arbab arbar arbol arbor arcoa arcor arlob aroab aroar aroba arola aroll aroor arora axlor baalc babar babax babol baboo babra bacab bacao bacar bacax bacca bacco balac balal balao balar balbo balca balco balla ballo baloo balor baoro bar-x baraa barab barac baral barao barar barba barca barco barla baro- baroa baroo baror barra barro bball blaca blacc bloor blorb bloxr bo-bo boaco boaro bobac bobal bobar bobla boboc bobr bocac bocal bocao bocar bocca bocoa bocor bolar bolax bolca boll- bolla bollo booba booco boola boora borac boral borax borba borbo borca borla boro- boroa boroo borox borra borro boxla braal