-ana aaaa aaab aaac aaad aaal aaan aaas aaba aabb aabc aabd aabl aaca aacb aacc aacd aacl aacn aacs aada aadc aads aala aalc aald aall aals aana aand aasa aasc aasd aass abaa abab abac abad abal aban abas abb- abba abbb abbs abca abcb abcc abcd abcl abcn abcs abda abla abls abs- absa absd absl abss acaa acab acac acad acan acas acba acbl acca accc accd accs acda acdb acdc acds acla aclc acls acsa acsc acsd acsl acss adaa adab adac adad adal adan adas adba adbc adcc adcs adda addc addd addl addn adds adls adna adns adsa adsl adss alaa alac alad alal alan alas alb- alba albc albs alca alcc alcs ald- alda aldl alds all- alla alll alln alls alna alsa alsc alsn ana- anaa anab anac anad anal anan anas anba anbb anbl anca ancc and- anda andl ands anla anlc anln anna annb anns ansa ansd asaa asab asac asad asal asan asas asba asc- asca ascb ascc ascl asda asdl asds asla asnc asnl assa assc assd assl assn asss baaa baad baal baan baas baba babb babs bac- baca bacc bacn bacs bada badb badd bads bala balc bald ball bals bana banc band bann bans basa basc bass bbad bbas bbbb bbbs bbdd bblb bbls bcaa bcas bcbc bcbs bcca bccc bccl bccs bcda bcds bcsa bcsc bcsl bcsn bcss bdbc bddc bdls bdna bdsd blaa blab blac blad blan blas bldc blls blss bnas bnss bsaa bsac bsas bsbd bscs bsdl bslc bsnd bsns bssc bssd c-cd caaa caab caac caal caan caas caba cabs cac- caca cacc cada cadc cadd cads cala calc cald call cals cana canc cand cann cans casa casb casc casd casl cass cbac cbal cbbc cbbs cbca cbcc cbcl cbcn cbcs cbdb cbdc cbdn cbds cblb cblc cbln cbna cbnd cbsa cbsc cbsn ccaa ccab ccac ccad ccas ccba ccbc ccbn ccca cccb cccc cccl cccs ccdc ccdn ccds ccla cclc ccls ccna ccnb ccnc ccns ccsa ccsd ccsl ccsn ccss cdaa cdac cdad cdba cdcs cdda cddb cddl cdls cdna cdnb cdnc cdss clab clad clan clas clcd cldc clsa clsc cnaa cnac cnas cnbc cnbl cnda cndd cnna cnsa cnsl cnss csaa csab csac csas cscb cscc cscd cscl cscs csda csdb csdn csla csld cssa cssd d-na daab daad daal daan daas daba dabb dabs daca dacs dada dads dala dall dals dana dand danl dann dans dasa dasb dasc dasd dasl dass dbas dbcc dbcs dbls dbnl dbsa dbss dcas dcbc dcca dccb dccc dccl dccs dcdb dcds dcls dcns dcsc dcss dddd ddlc ddss dlab dlbd dlcs dnaa dnab dnac dnad dnan dnas dncs dnsa dnsc dsac dsba dsbc dscc dscn dscs dsda dsls dssa dssc dssn laaa laac laad laal laan laas laba labs laca lacc lacl lacs lada ladd lads lala lald lall lan- lana lanc land lann lans lasa lasd lass lbcc lbds lbsc lcac lcad lcbc lcca lccc lccs lcdd lcds lcls lcsc lcsd ldls llan llbs llcc llcs lldb lldc llds lllc llll lndn lscb lscs lsds lsla lssa naaa naab naac naad naal naan naas naba nabc nabl nabs naca nacc nacd nacl nacs nada nadc nads nala nalc nald nall nals nan- nana nanb nand nann nans nas- nasa nasb nasc nasd nasl nass nbaa nbad nbas nbbc nbca nbcc nbcs ncaa ncac ncba ncbc ncbs ncca nccc nccn nccs ncda ncdc ncdn ncds nclc ncln ncna ncnc ncnd ncsa ncsc ncsl ncss ndaa ndas ndcc ndcs nddb ndls ndna ndsl ndss nlab nlcc nlcs nlls nlsc nndb nnls nnnn nnsa nnsl nnss nsaa nsac nsca nscc nscd nscl nscs nsdl nsds nsla nsls nsna nssa nssb nssc nsss sa-c saab saac saad saal saan saas saba sabb sabc sabs saca sacc sacd sacn sacs sada sadb sadc sadd sadl sads sala salc sald sall sals sana sand sann sans sasa sasc sasd sasl sass sbaa sbac sbas sbbs sbca sbcc sbcs sbds sbsa sbsd scaa scab scac scad scal scan scas scba sccc sccl sccs scda scdc scds scl- sclc scls scna scnd scsa scsc scsd scsl scsn sdba sdcc sddc sdds sdla sdlc sdls sdna sdsc sdsl sdss slaa slab slac slad slan slas slcc slcd slds slln slsa slsc snab snad snas snba snca sncc snda snla snns snsd ssaa ssab ssac ssan ssas ssbn ssca sscc sscs ssdc ssdd ssla sslc ssns sssa sssb sssc ssss