a-a a-b a-c aaa aab aac aam aao aap aar ab- aba abb abc abm abo abp abr ac- aca acb acc acm aco acp acr ama amb amc amm amo amp amr aoa aob aoc aom aoo aop aor ap- apa apb apc apm apo app apr ar- ara arb arc arm aro arp arr b-p baa bab bac bam bao bap bar bba bbb bbc bbm bbo bbp bbr bca bcb bcc bcm bco bcp bcr bma bmb bmc bmm bmo bmp bmr boa bob boc bom boo bop bor bpa bpb bpc bpm bpo bpp bpr bra brb brm bro brp brr c-- caa cab cac cam cao cap car cba cbb cbc cbm cbo cbp cbr cca ccb ccc ccm cco ccp ccr cma cmb cmc cmm cmo cmp cmr co- coa cob coc com coo cop cor cpa cpb cpc cpm cpo cpp cpr cra crb crc crm cro crp crr m-o m-r maa mab mac mam mao map mar mba mbb mbc mbm mbo mbp mbr mc- mca mcb mcc mcm mco mcp mcr mma mmb mmc mmm mmo mmp mmr moa mob moc mom moo mop mor mpa mpb mpc mpm mpo mpp mpr mra mrb mrc mrm mro mrp mrr oaa oab oac oam oao oap oar ob- oba obb obc obm obo obp obr oc- oca ocb occ ocm oco ocp ocr om- oma omb omc omm omo omp omr oo- ooa oob ooc oom ooo oop oor op- opa opb opc opm opo opp opr or- ora orb orc orm oro orp orr p-p paa pab pac pam pao pap par pba pbb pbc pbm pbo pbp pbr pca pcb pcc pcm pco pcp pcr pma pmb pmc pmm pmo pmp pmr poa pob poc pom poo pop por ppa ppb ppc ppm ppo ppp ppr pra prb prc prm pro prp prr ra- raa rab rac ram rao rap rar rba rbb rbc rbm rbo rbp rbr rca rcb rcc rcm rco rcp rcr rma rmb rmc rmm rmo rmp rmr roa rob roc rom roo rop ror rpa rpb rpc rpm rpo rpp rpr rra rrb rrc rrm rrp rrr

aaaa aaab aaac aaam aaap aaar aaba aabb aabc aabm aabp aaca aacb aacc aacm aaco aacp aacr aama aamb aamc aamo aamp aamr aaoo aapa aapc aapm aapo aara aarc aarm aaro aarp abaa abab abac abam abap abar abb- abba abbb abbo abbr abca abcb abcc abcp abcr abma abmb abmc aboa abob aboo abor abpa abpc abpm abpp abpr abra abrc abro acaa acab acac acap acar acba acca accc accm acco accp acma acmc acmp acoa acom acop acor acpa acpm acpr acr- acra acrc acrm acro acrr amaa amac amam amap amar amb- amba ambo ambr amca amcc amco amm- amma ammo amob amoc amoo amor ampa ampc ampm ampo amra amrc amro aoba aoca aoma aopo aora aorb apac apam apao apap apar apba apbr apca apcb apcc apcm apco apcr apma apo- apoc apom apoo apop apor appa appc appr apra aprc apro arab arac aram arap arar arba arc- arca arcm arco arma armc armm armo aroa arob arom aroo aror arpa arr- arra arrc arro arrr baaa baam baar baba babb babm babo babr bac- baca bacc baco bama bamb bamc bamm bamp bapa bapc bapp bar- bara barb barc barm baro barr bbbb bbcm bbpr bbrc bcaa bcam bcap bcar bcbc bcbp bcca bccc bccm bcma bcmp bcor bcpp bcra bmaa bmoc bmop boab boac boar boba bobb bobo boca bocm boco boma bomb bomp boob booc boom boop boor bopa bopp bor- bora borm boro borr bpcp bpmc bprc brab brac bram brao brca brcb brmc broa brob broc brom broo bror brrm brrr c-bo caaa caab caac caam caap caba cabo cac- caca cacc cacm caco cacr cama camb camc camm camo camp caor capa capb capc capm capo capp cara carb carc carm caro carp carr cbac cbar cbbc cbca cbcc cbcm cbcp cbcr cbpc cbpp cbrm ccaa ccab ccac ccam ccap ccar ccba ccbc ccca cccb cccc cccm cccp ccma ccmb ccmc ccmm ccmp ccob ccoc ccom ccpa ccpm ccpp ccpr ccra ccrc ccrp cmaa cmac cmap cmba cmbc cmcc cmmb cmmc cmoc cmpa cmpc cmpp cmra cmrr coba cobb cobo coca coco cocp com- coma comb comc comm como comp comr coob coom coop copa copo copp copr cor- cora corb corc corm coro corp corr cpaa cpac cpam cpap cpbc cpca cpcm cpma cpmp cppa cppm cprm crab crac cram crap crar crbc crca crcc crcr crmb crmo crmp crob croc crom croo crop cror crpc maaa maac maam maap maar maba mabo mac- maca macb macc maco macp macr mama mamc mamo mamp maoc maor mapa mapo mapp mapr mar- mara marc marm maro marr mbac mbam mbba mbca mcaa mcac mcap mcba mcbc mcca mccc mcmc mcop mcpa mcpb mcpc mcpp mcrc mmaa mmab mmac mmap mmar mmcc mmcm mmmc mmmm mmor mmpa mmpc mmpr mmrc mmrp moaa moab moac moam moap moar moba mobb mobo moca moco moma momo mooa moob mooc moop moor mopa mopp mora morb moro mpaa mpac mpao mpca mpcc mpmc mppc mppp mpro mprp mr-c mrac mrap mrbb mrbm mrca mrcb mrcc mrcp mrmc mrpa mrrc oama oamp oara obba obbo obor obra obro ocab ocac ocam ocap ocbc occa occc ocma ocom ocpa ocpm ocpp ocra ocro ocrr omac omam omao omap omar ombo omca omma omo- omoa omoo omor ompa omra omro ooaa ooba oocr ooma oooo oora opap opar opca opo- opor oppa oppo opra orab orac oram orao orar orba orbb orbo orca orco orma ormo oro- orom oror orpc orra orro paap paar paba paca paco pam- pama pamb pamm pamo pamp paoc papa papb papp papr par- para parc parm paro parp parr pbac pbar pbcc pbmr pboc pbpa pcaa pcap pcba pcbc pcbm pcca pccc pcmb pcoa pcom pcpb pcpm pcpp pcra pcrc pmaa pmac pmbr pmcc