a-be a-do aaaa aaab aaac aaad aaae aaap aaba aabb aabc aabd aabp aaca aacb aacc aacd aace aaco aacp aada aadc aade aaea aaec aaep aaoe aaoo aapa aapc aapo abaa abab abac abad abae abaj abap abb- abba abbb abbe abbo abca abcb abcc abcd abcp abda abdo abec abed abee aboa abob abod aboo abpa abpc abpd abpp acaa acab acac acad acae acap acba acca accc accd acce acco accp acda acdb acdc acde acdp ace- acea acec aced acoa acod acoe acop acpa acpd acpe adaa adab adac adad adae adao adap adba adbc adcc adda addc addd adde addo adea adeb adee adeo adja adob adoc adod adoe adoo adp- aeac aeap aecb aede ajab ajac ajao ajba ajed ajee ajep ajob ajoo ajpa aoba aoca aoce aopo apac apao apap apba apca apcb apcc apcd apco apda apdd apea apec aped apep apo- apoc apod apoe apoo apop appa appc appd baaa baad baba babb babe babo bac- baca bacc bace baco bada badb badd bade bado baed baja bapa bapc bape bapp bbad bbbb bbdd bbdo bbeb bcaa bcap bcbc bcbp bcca bccc bcda bcde bcec bcpp bd-j bdbc bddc bdpc bead beap beba bebb bebe bebo beca beda bede bedo beeb beed beej beep beja beo- beod bepo bjcc bjec bjoa boab boac boad boba bobb bobe bobo boca boce boco boda bodb bode bodo boea boec boee boeo boep bojd bojo boob booc bood booe boop bopa bope bopp bpcp bpda bpea bpoe c-bo c-cd caaa caab caac caap caba cabe cabo cac- caca cacc cace caco cada cadc cadd cade cado caec caja caod capa capb capc capd cape capo capp cbac cbbc cbca cbcc cbce cbcp cbdb cbdc cbdo cbea cbec cbee cbpc cbpp ccaa ccab ccac ccad ccap ccba ccbc ccca cccb cccc cccp ccdc ccdp cced ccee ccjo ccob ccoc ccod ccpa ccpe ccpp cd-e cdaa cdac cdad cdba cdda cddb cdec ceac cead ceba cebp cec- ceca cece ceco cecp ceda cedd cede cedo ceeb ceec ceja cejc ceop cepa cepc cepe cepo cepp cjad cjbc cjca cjcb cjcj cjdc cjob cjpp coad coba cobb cobe cobo coca coce coco cocp coda codd code coed coep cojo coob cood coop copa copd cope copo copp cpaa cpac cpad cpap cpbc cpca cpce cpea cpeb cpep cppa cppd d-bo daab daad daae daap daba dabb dabo dabp daca dace dada dade dado daeb daja dajc dapa dape dapp dbcc dbcp dbpc dbpd dcbc dcca dccb dccc dccp dcdb dcop dcpo dddd ddoc ddpo deac dead deae deap deba debe dec- deca decc decd dece decj deco deda dedd dede dedo deeb deed deep deja deje deop depa depc depe depo depp djao djed djpc doab doae doap doba dobb dobe doca doce doco dod- doda dodd dode dodo doea doja dojo doob dood doop dopa dope dopo dopp dpaa dpac dpbc dpcp dppa dppc eaba eaca eacc eada eadb eadd eadp eaec eaop eapc eapp ebac ebba ebbc ebbo ebcc ebed eboe eboo ebpo ecaa ecac ecad ecao ecbc ecbe ecca eccb eccc ecce ecco ecdc eced eco- ecod ecop ecpa ecpd ecpp edac edad edca edda eddc edde eddo eddp ede- edea edjo edoc edod eeca eede eeea eeee eeoc ejob ejoo eocd eode epaa epac epad epcc epec epee epoc epod eppa eppc eppo eppp jaap jaba jabo jaca jacc jace jaco jada jade jado jaja japa jape japp jbaa jbob jcap jcbc jccc jcda jcpa jebb jebe jeda jedp jeed jeep jjad jjap jjcc jjdp joab joad joao joba jobe jobo joca joce joco joda jodo joea joed joee jojo jopa jope jpca jpcc jpda jpod jpop o-eo oade obad obba obbo obea obec obed obja oboe ocab ocac ocad ocap ocbc occa occc oce oced ocee ocpa ocpd ocpp odac odbo odda oddd odea oded odeo odoo odop oec- oeca oecc oedo oeec oepa ojea ooaa ooba oobe ooda oooo opap opca opec oped opep opo- opoj oppa oppo paap paba paca pacd pace paco pada padd pade pado paea paec paep paja paje pajo paoc papa papb pape papp pbac pbcc pbed pboc pbpa pcaa pcad pcae pcap pcba pcbc pcca pccc pcce pcea pcep pcjj pcoa pcod pcoe pcpb pcpp pdac pdca pdcp pdea pdoc pdpa peab peac peap peba peca pece peco ped- peda pede pedo peec peed peep peja peje pepa pepd pepe pepo poad poba pobo poca pocd poce poco pod- poda podd pode podo poea poed pojo pood poop pop- popa popc pope popo popp ppac ppad ppap ppcc ppcd ppoa ppod pppa pppd pppo pppp