neua neuc neue neuk neun neuu nkau nndb nnnn nuan nuba nubc nube nubk nuca nuce nuck nucu nuda nudc nudd nude nuee nuka nuke nuku nuna nunc nune nunk nunn nuuk uabc uaca uaua ubac ubba ubbe ubek ubud ucad ucak ucan ucbc ucca ucdc ucdd ucea ucka ucua udaa udad udau udbc udca udea uden uduk udun ueba ueda uend ukba ukcc ukek ukeu uknc unaa unac unan unau unbd unbe unca uncc unce unda unde uneb unec uned unee unen unka unke unkn unna unne uuen uuuu