aaaa aaac aaad aaaf aaas aaca aacc aacd aacf aacs aact aada aadc aads aadt aafa aafc aafd aaff aasa aasc aasd aasf aass aast aata aatc aatf aatt ac-t acaa acac acad acas acat acca accc accd accf accs acct acda acdc acdf acds acdt acfc acfd acfs acft acsa acsc acsd acss acst acta actc actf acts actt adaa adac adad adas adat adcc adcs adda addc addd adds adfa adfc adfs adsa adss adst adta adts afaa afad afat afca afcc afcs afdc affa affc affs afft afsa afsc afst afta aftc afts asaa asac asad asaf asas asat asc- asca ascc asct asda asdf asds asfa assa assc assd asss asst asta astc asts at-t ataa atac atad atas atat atca atcc atcf atcs atdt atfc atfs atsc atst atta atts c-cd caaa caac caaf caas caat cac- caca cacc cada cadc cadd cads cafa cafc caff cafs casa casc casd cass cast cat- cata catc catd catf cats catt ccaa ccac ccad ccaf ccas ccat ccca cccc cccf cccs ccdc ccdf ccds ccfa ccfc ccfd ccff ccsa ccsd ccsf ccss ccst cctc cctt cdaa cdac cdad cdcs cdda cdfa cdfs cdss cfaa cfac cfca cfcf cfcs cfda cfds cfsa cfta cftc csaa csac csas csat cscc cscd cscf cscs csda csfc cssa cssd csta cstc cstd csts ctca ctcf ctfc ctfs ctsa ctsc ctss ctta ctts daad daas daca dacs dact dada dads dafa dafc daff dafs daft dasa dasc dasd dass dast data dats datt dcas dcca dccc dccs dcct dcds dcfc dcfs dcsc dcss dctc dcts dddd ddss ddts dfaf dfas dfcc dfcs dfds dfdt dffa dfts dsac dscc dscs dsda dsfa dsfc dssa dssc dsst dstc dsts dtaa dtac dtcc dtfc dtss faaa faac faad faas faca facc facs fact fada fadd fads fafa fafc faff fasa fasc fasd fass fast fata fatc fatf fats fatt fcas fcat fcca fccf fcda fcds fcsc fcst fdca fdst fdtc ffcc ffff ffsa ffss fftf fsas fscc fssa fssc fssf fsta ft-c ftcd ftfc ftsa sa-c saac saad saaf saas saat saca sacc sacd sacs sact sada sadc sadd sads sadt safa safc saff saft sasa sasc sasd sasf sass sast sata satc satd sats satt scaa scac scad scaf scas scat sccc sccs scct scda scdc scdf scds scfa scfc scsa scsc scsd scst sctc sctd scts sdcc sddc sdds sdfc sdsc sdsf sdss sfas sfca sfcc sfcs sfdc sffc sfss sfts ssaa ssac ssas ssat ssca sscc sscs ssdc ssdd ssdf ssfc sssa sssc sssf ssss ssta sstc sstd ssts stac stad stas stat stca stcc stcs stds stfc stsf stss sttc sttd taa- taaf taas taat taca tacc tacs tact tada tads tafa tafc taff taft tasa tasc tass tast tata tats tatt tcad tcca tccc tcdd tcfc tctc tcts tdac tdff tdss tfca tfdc tfsd tfss tftc tsaa tsat tsca tscc tsfc tssa tssf tsst tstc tsts ttfa ttfc ttff ttss tttt