-ana aaaa aaab aaac aaan aaba aabb aabc aaca aacb aacc aacn aaco aana aang aaon aaoo abaa abab abac abag aban abb- abba abbb abbo abca abcb abcc abcn aboa abob abon aboo acaa acab acac acag acan acba acca accc acco acga acoa acog acon ag-o agac agag agan agao agba agbo agca agcc agco agga agna agno agob agog agon agoo ana- anaa anab anac anag anan anao anba anbb anbo anca ancc anco ang- anga ango anna annb anno ano- anoa anon aoba aoca aonb aono baaa baan baba babb babo bac- baca bacc bacn baco baga bagg bagn bago bana banc bang bann bano baon bbbb bbga bbng bcaa bcbc bcbg bcca bccc bgan bgca bgon bnoc boab boac boag boan boba bobb bobo boca boco boga bogg bogo bona bonc bong bonn bono boob booc boog boon c-bo caaa caab caac caan caba cabg cabo cac- caca cacc caco caga cagg cagn cago cana canc cang cann cano cbac cbbc cbca cbcc cbcn cbga cbgb cbna ccaa ccab ccac ccag ccba ccbc ccbn ccca cccb cccc ccga ccgc ccna ccnb ccnc ccob ccoc cgac cgcc cgcg cnaa cnac cnag cnbc cnco cnna coag coan coba cobb cobo coca coco cogo con- cona conc cong conn cono coob coon gaba gabb gabo gaga gagg gago gana ganc gang gann gano gaon gbag gban gbbo gbon gc-c gcaa gcbc gccc gcna gcoa gggg gnaa gnac gncc gngc gnoo goan goba gobo goca goga gogo gon- gona gong gonn gono goog goon naaa naab naac naag naan naba nabc nabo naca nacc naco naga nagc nago nan- nana nanb nang nann nano naoc nbaa nbbc nbbo nbca nbcc nbco ncaa ncac ncba ncbc ncca nccc nccn ncga ncna ncnc ncoa ncoc ngab ngac ngan ngao ngon nngn nnnn noaa noac noba nobc nobo noco noga nogg nogo non- nona nong nonn nono noo- noob noon nooo oban obba obbo obon ocab ocac ocan ocbc occa occc occn ocga ocna ocon ogb ogba ogna ogoa ogog ogon onab onan onc- onca onco onga ongo onna onno onon ooaa ooba oona oooo