-ana aaaa aaac aaan aaas aaca aacc aacn aaco aacs aana aaon aaoo aasa aasc aass acaa acac acan acas acca accc acco accs acoa acon acos acsa acsc acss ana- anaa anac anan anao anas anca ancc anco anna anno anns ano- anoa anon anos ansa anso aoca aocs aono aoss asaa asac asan asao asas asc- asca ascc asco asnc asno asoc ason asos assa assc assn asso asss caaa caac caan caas cac- caca cacc caco cana canc cann cano cans caos casa casc caso cass ccaa ccac ccas ccca cccc cccs ccna ccnc ccns ccoc ccsa ccsn ccss cnaa cnac cnas cnco cnna cnsa cnss coan coas coca coco con- cona conc conn cono cons coon coos cosa cosc coso coss csaa csac csao csas cscc csco cscs csos cssa naaa naac naan naas naca nacc naco nacs nan- nana nann nano nans naoc naos nas- nasa nasc naso nass ncaa ncac ncca nccc nccn nccs ncna ncnc ncoa ncoc ncos ncsa ncsc ncss nnnn nnos nnsa nnss noaa noac noco nocs non- nona nonn nono nons noo- noon nooo noos nos- nosa noss nsaa nsac nsca nscc nscs nsna nsos nssa nssc nsso nsss oasc oass ocac ocan ocas occa occc occn ocna ocon ocos ocsa onan onas onc- onca onco onna onno onon onos onsc onso ooaa oona oons oooo ooos oosa osan osas osca oscc osco osno osoo osos ossa osso s-os sa-c saac saan saas saca sacc sacn saco sacs sana sann sano sans saon saos sasa sasc saso sass scaa scac scan scas sccc sccs scna scon scoo scsa scsc scsn scso snas snca sncc snco snns snoa snoc snoo snos soan soas soca soco socs son- sona sono sons soon soos sosa soso soss ssaa ssac ssan ssao ssas ssca sscc sscs ssns ssoc sssa sssc ssss