-al -ol a-a a-b a-c a-t aaa aab aac aaf aal aam aao aas aat ab- aba abb abc abf abl abm abo abs abt ac- aca acb acc acf acl acm aco acs act af- afa afb afc aff afl afm afo afs aft al- ala alb alc alf all alm alo als alt ama amb amc amf aml amm amo ams amt aoa aob aoc aof aol aom aoo aos aot as- asa asb asc asf asl asm aso ass ast at- ata atb atc atf atl atm ato ats att baa bab bac baf bal bam bao bas bat bba bbb bbc bbf bbl bbm bbo bbs bbt bca bcb bcc bcf bcl bcm bco bcs bct bfa bfb bfc bff bfl bfm bfo bfs bft bla blb blc blf bll blm blo bls blt bma bmb bmc bmf bml bmm bmo bms bmt boa bob boc bof bol bom boo bos bot bsa bsb bsc bsf bsl bsm bso bss bst bta btb btc btf btl btm bto bts btt c-- caa cab cac caf cal cam cao cas cat cba cbb cbc cbf cbl cbm cbo cbs cbt cca ccb ccc ccf ccl ccm cco ccs cct cfa cfb cfc cff cfl cfm cfo cfs cft cl- cla clb clc clf cll clm clo cls clt cma cmb cmc cmf cml cmm cmo cms cmt co- coa cob coc cof col com coo cos cot csa csb csc csf csl csm cso css cst cta ctb ctc ctf ctl ctm cto cts ctt faa fab fac faf fal fam fao fas fat fba fbb fbc fbf fbl fbm fbo fbs fbt fca fcb fcc fcf fcl fcm fco fcs fct ffa ffc fff ffl ffm ffo ffs fft fla flb flc flf fll flm flo fls flt fma fmb fmc fmf fml fmm fmo fms fmt foa fob foc fof fol fom foo fos fot fsa fsb fsc fsf fsl fsm fso fss fst fta ftb ftc ftf ftl ftm fto fts ftt la- laa lab lac laf lal lam lao las lat lba lbb lbc lbf lbl lbm lbo lbs lbt lca lcb lcc lcf lcl lcm lco lcs lct lfa lfb lfc lff lfl lfm lfo lfs lft lla llb llc llf lll llm llo lls llt lma lmb lmc lmf lml lmm lmo lms lmt loa lob loc lof lol lom loo los lot lsa lsb lsc lsf lsl lsm lso lss lst lta ltb ltc ltf ltl ltm lto lts ltt m-f m-o maa mab mac maf mal mam mao mas mat mba mbb mbc mbf mbl mbm mbo mbs mbt mc- mca mcb mcc mcf mcl mcm mco mcs mct mfa mfb mfc mff mfl mfm mfo mfs mft mla mlb mlc mlf mll mlm mlo mls mlt mma mmb mmc mmf mml mmm mmo mms mmt moa mob moc mof mol mom moo mos mot msa msb msc msf msl msm mso mss mst mta mtb mtc mtf mtl mtm mto mts mtt oaa oab oac oaf oal oam oao oas oat ob- oba obb obc obf obl obm obo obs obt oc- oca ocb occ ocf ocl ocm oco ocs oct of- ofa ofb ofc off ofl ofm ofo ofs oft ola olb olc olf oll olm olo ols olt om- oma omb omc omf oml omm omo oms omt oo- ooa oob ooc oof ool oom ooo oos oot os- osa osb osc osf osl osm oso oss ost ot- ota otb otc otf otl otm oto ots ott saa sab sac saf sal sam sao sas sat sba sbb sbc sbf sbl sbm sbo sbs sbt sca scb scc scf scl scm sco scs sct sfa sfb sfc sff sfl sfm sfo sfs sft sla slb slc slf sll slm slo sls slt sma smb smc smf sml smm smo sms smt soa sob soc sof sol som soo sos sot ss- ssa ssb ssc ssf ssl ssm sso sss sst sta stb stc stf stl stm sto sts stt taa tab tac taf tal tam tao tas tat tba tbb tbc tbf tbl tbm tbo tbs tbt tca tcb tcc tcf tcl tcm tco tcs tct tfa tfb tfc tff tfl tfm tfo tfs tft tla tlc tlf tll tlm tlo tls tlt tma tmb tmc tmf tml tmm tmo tms tmt to- toa tob toc tof tol tom too tos tot tsa tsb tsc tsf tsl tsm tso tss tst tta ttb ttc ttf ttl ttm tto tts ttt

aaaa aaab aaac aaaf aaal aaam aaas aaba aabb aabc aabl aabm aabt aaca aacb aacc aacf aacl aacm aaco aacs aact aafa aafb aafc aaff aafl aala aalc aall aalo aals aama aamb aamc aamo aams aaoo aasa aasc aasf aasm aass aast aata aatc aatf aatt abaa abab abac abaf abal abam abas abat abb- abba abbb abbo abbs abbt abca abcb abcc abcf abcl abcs abct abff abla ablo abls abma abmb abmc abms abmt aboa abob abof abol aboo abos abot abs- absa absf absl abss abta abts ac-t acaa acab acac acas acat acba acbl acca accc accf accm acco accs acct acfc acfl acfm acfs acft acla aclc acls acma acmc acmf acms acoa acol acom acos acot acsa acsc acsl acsm acss acst acta actc actf actl acto acts actt afaa afam afao afat afbs afca afcb afcc afcs affa affc affo affs afft afla aflc afma afmc afoa afol afoo afsa afsb afsc afsm afst afta aftc afts alaa alac alal alam alao alas alat alb- alba albc albm albo albs alca alcc alco alcs alfa alfs all- alla alll allo alls alma almc almo alms aloa aloc alof alol alom aloo alos alot alsa alsc also alst alta altm alto alts amaa amac amal amam amas amat amb- amba ambo ambs amca amcc amco amcs amfm amla amm- amma ammo amob amoc amof amol amoo amos amot amsa amsc amsl amso amss amst amta amtc amto