c-p-c ccccc ccell cecun ceele ceene cell- celle cence cenel ceneu cenpl cenpn cleen clene clepe clue- clune clupe cnnnn cueup culle cullu culpe cunel cunne cupel cuple cupul cuuel eccen eccle eccup eeeee eence eepee elele elene ellel ellen ellul elnec elpee elulu encup enlen enpeu epeen epene eucen euell eulen eupen lcecn lecce leece leell lelep leleu lelle lence lenne lepel leppe leuc- leuce leupp lucee lucun lueen luen lulec lulle luluc lulul lunel lunne luppe lupul n-p-n ncell neece neele neelu nelle nellu neple neppe neuen neueu neune nu-nu nuell nulle nunce nunun nupen p-n-p pcell pecel pecul peece peele peell peene pelee pelle pence pene- penne penup pepee pepel peple peppe pepup peuce peule pleen pleep plene plunc plupp pucel pulce pull- pulle pullu punce punee punel punne puple puppe u-cee uccel uccle ucell uclue uelen ulene ululu uncle uncup unnun unpen unpeu upc-e upenn uppen uuuuu