a-do aaaa aaab aaac aaad aaap aaba aabb aabc aabd aabp aaca aacb aacc aacd aaco aacp aada aadc aaoo aapa aapc aapo abaa abab abac abad abag abap abb- abba abbb abbo abca abcb abcc abcd abcp abda abdo abgd aboa abob abod aboo abpa abpc abpd abpp acaa acab acac acad acag acap acba acca accc accd acco accp acda acdb acdc acdp acga acoa acod acog acop acpa acpd adaa adab adac adad adag adao adap adba adbc adcc adda addc addd addo adob adoc adod adog adoo adp- ag-o agac agad agag agao agap agba agbo agca agcc agco agda agga agob agod agog agoo aoba aoca aopo apac apao apap apba apbg apca apcb apcc apcd apco apda apdd apga apo- apoc apod apoo apop appa appc appd baaa baad baba babb babo bac- baca bacc baco bada badb badd bado baga bagg bago bapa bapc bapp bbad bbbb bbdd bbdo bbga bcaa bcap bcbc bcbg bcbp bcca bccc bcda bcpp bdbc bddc bdog bdpc bgca boab boac boad boag boba bobb bobo boca boco boda bodb bodo boga bogd bogg bogo boob booc bood boog boop bopa bopp bpcp bpda c-bo c-cd caaa caab caac caap caba cabg cabo cac- caca cacc caco cada cadc cadd cado caga cagg cago caod capa capb capc capd capo capp cbac cbbc cbca cbcc cbcp cbdb cbdc cbdo cbga cbgb cbpc cbpp ccaa ccab ccac ccad ccag ccap ccba ccbc ccca cccb cccc cccp ccdc ccdp ccga ccgc ccob ccoc ccod ccpa ccpp cdaa cdac cdad cdba cdda cddb cgac cgap cgcc cgcg coad coag coba cobb cobo coca coco cocp coda codd cogo coob cood coop copa copd copg copo copp cpaa cpac cpad cpag cpap cpbc cpca cpga cpgb cppa cppd d-bo daab daad daag daap daba dabb dabo dabp daca dada dado daga dagg dago dapa dapg dapp dbag dbcc dbcp dbgp dbpc dbpd dcbc dcca dccb dccc dccp dcdb dcgo dcop dcpg dcpo dddd ddoc ddpo dgac dgca doab doap doba dobb doca doco dod- doda dodd dodg dodo dog- doga dogg dogo dogp doob dood doop dopa dopo dopp dpaa dpac dpag dpbc dpcp dppa dppc gaap gaba gabb gabo gabp gada gadd gado gadp gaga gagg gago gapa gapp gbag gbap gbbo gc-c gcaa gcap gcbc gccc gcda gcoa gcpc gdca gddb gggg ggpo goad goba gobo goca goda godo goga gogo good goog goop gopc gopo gpaa gpac gpca gpgp obad obba obbo ocab ocac ocad ocap ocbc occa occc ocga ocpa ocpd ocpp odac odbo odda oddd odoo odop ogb ogba ogdc ogoa ogod ogog ooaa ooba ooda oooo opap opca opo- oppa oppo paag paap paba paca pacd paco pada padd pado paga pagb pago paoc papa papb papg papp pbac pbcc pbgc pboc pbpa pcaa pcad pcap pcba pcbc pcca pccc pcgg pcoa pcod pcpb pcpp pdac pdag pdca pdcp pdoc pdpa pgaa pgcc poad poba pobo poca pocd poco pod- poda podd podo pogg pogo pood poop pop- popa popc popo popp ppac ppad ppap ppcc ppcd ppga ppoa ppod pppa pppd pppo pppp