inni n-ii naaa naab naac naad naai naan naba nabc nabe nabf nabi naca nacc nacd nace nacf naci nada nadc nade nadf nadi naea naef nafa nafc nafe naff nafi naia naib naic naid naie naif nain nan- nana nanb nand nane nani nann nbaa nbad nbaf nbbc nbca nbcc nbci nbfa nbfc nbia nbic ncaa ncac ncba ncbc ncbi ncca nccc nccf ncci nccn ncda ncdc ncdn ncea ncec nced ncee ncef ncen ncfc ncfe ncia ncid ncna ncnc ncnd ndaa ndai ndcc nddb ndde ndei ndfa ndfi ndia ndic ndna neab neac nead neaf nean neba nebb nebe nebn neca necc nece neda nedc nedd nede nedi neea neeb need neef neei neen nefa nefd nefe neff nefi neia neic neid neif nein nena nend nene neni nfaa nfda nfdc nfff nfia nfib nfic niab niac niad niaf nian nibe nibi nica nicc nicd nice nicf nici nida nidd nide nidi niea nied nief nien nifa nifc nife niff niia nina nind nine nini nndb nnnn