-ana aaaa aaac aaaf aaan aaas aaca aacc aacf aacn aacs aafa aafc aaff aana aasa aasc aasf aass acaa acac acan acas acca accc accf accs acfc acfs acsa acsc acss afaa afan afca afcc afcs affa affc affs afsa afsc ana- anaa anac anan anas anca ancc anfa anna anns ansa ansf asaa asac asaf asan asas asc- asca ascc asfa asnc assa assc assn asss caaa caac caaf caan caas cac- caca cacc cafa cafc caff cafs cana canc cann cans casa casc cass ccaa ccac ccaf ccas ccca cccc cccf cccs ccfa ccfc ccff ccna ccnc ccnf ccns ccsa ccsf ccsn ccss cfaa cfac cfca cfcf cfcn cfcs cfns cfsa cnaa cnac cnas cnfa cnna cnsa cnss csaa csac csas cscc cscf cscs csfc cssa faaa faac faan faas faca facc facs fafa fafc faff fana fanc fans fasa fasc fasn fass fcas fcca fccf fcsc ffcc ffff ffsa ffss fnac fsas fscc fssa fssc fssf naaa naac naan naas naca nacc nacf nacs nafa nafc naff nafs nan- nana nann nans nas- nasa nasc nasf nass ncaa ncac ncca nccc nccf nccn nccs ncfc ncna ncnc ncsa ncsc ncsf ncss nfaa nfas nfff nnnn nnsa nnss nsaa nsac nsca nscc nscs nsfc nsfs nsna nssa nssc nssf nsss sa-c saac saaf saan saas saca sacc sacn sacs safa safc saff sana sann sans sasa sasc sasf sass scaa scac scaf scan scas sccc sccs scfa scfc scna scsa scsc scsn sfas sfca sfcc sfcs sffc sfss snas snca sncc sncf snns ssaa ssac ssan ssas ssca sscc sscs ssfc ssns sssa sssc sssf ssss