-ana a-do aaaa aaac aaad aaan aaca aacc aacd aacn aaco aada aadc aana aand aaon aaoo acaa acac acad acan acca accc accd acco acda acdc acoa acod acon adaa adac adad adan adao adcc adda addc addd addn addo adna adoc adod adon adoo ana- anaa anac anad anan anao anca ancc anco and- anda ando anna anno ano- anoa anod anon aoca aono c-cd caaa caac caan cac- caca cacc caco cada cadc cadd cado cana canc cand cann cano caod ccaa ccac ccad ccca cccc ccdc ccdn ccna ccnc ccoc ccod cdaa cdac cdad cdda cdna cdnc cdon cnaa cnac cnco cnda cndd cnna coad coan coca coco coda codd con- cona conc cond conn cono cood coon d-na daad daan daca dada dado dana dand dann dano daon dcca dccc dcon dddd ddoc dnaa dnac dnad dnan dnoc doan doca doco dod- doda dodd dodo dona donc dond donn dono dood doon naaa naac naad naan naca nacc nacd naco nada nadc nan- nana nand nann nano naoc ncaa ncac ncca nccc nccn ncda ncdc ncdn ncna ncnc ncnd ncoa ncoc ndaa ndao ndcc nddo ndna ndoc nnnn noaa noac noco noda nodo non- nona nonn nono noo- noon nooo ocac ocad ocan occa occc occn ocna ocon odac odda oddd odon odoo onan onc- onca oncd onco onda ondo onna onno onod onon ooaa ooda oona oooo