nnsl nnss nrcs nren nrfc nrrc nrrl nrsc nscc nscl nscs nsec nsel nser nsfc nsfk nsfs nskk nslr nsls nsnr nsrc nsrl nssc nsse nssf nssr nsss nuce nuck nucs nucu nuee nuel nuer nuff nuke nuku nule null nunc nune nunk nunn nuns nurc nure nurl nurn nurr nurs nuru nuse nusl nuss nusu nuuk rccc rccs rcfc rcle rcls rcnl rcnr rcsc rcsl rcss recc rece reck recr recs recu reef reek reel reen rees refe reff refl refn refr refs refu reke reks rele rell rels rene renk renn rens renu rere rers reru rese resn ress reue reuf reuk reul reus reuu rfef rffc rffl rkkf rkss rlcs rlee rlef rleu rlls rncs rrfc rrle rrrr rrun rscc rscn rscs rsee rsfc rslc rsnn rsnr rsre rssl ruce ruck ruel ruen ruer rues rufc rufe ruff ruke rukk rukn ruku rule rulk rull runc rune runf runk runn runs rurc rure rurs ruru ruse rusk russ rusu ruun sccc scce sccl sccs scec scee scel scer scfc scfe sck- sckl scl- sclc sclk scls scnr scr- scrc scre scrn scrs scsc scsl scsn scsr scsu scul scun scur se-c se-e se-f se-k se-n se-s se-u sec- secc sece seck secn secr secs secu seec seef seek seel seen seer sees seeu seff sefl seke sekk seku sele self selk sell sels selu sene senn senr sens serc sere serf serk sern serr sers seru sesc sese sess seul seur sfcc sfcs sfer sffc sflc sfls sfne sfrc sfss sfsu skee skel sken sker skes skfc skn- skss skue skul skun skur slcc slcu slee sler sles slln slrc slre slrn slrs slsc slsu sluc slue slur sncc sncf snee snel sner snes snfu snlf snns snrk snrs snur snus srcc srec sres srfc srnn sscc ssce sscs ssec ssee sses ssfc ssfl sslc ssle ssns ssrc ssrl ssrs sssc sssf ssss suc- succ suck sucr sucs suee suel suen suer sues sueu suf- sufc suff sufr sufs sufu suke suks suku sul- sulc sule sulf sulk sull sulu sun- sune sunk sunn suns sunu sur- surc sure surf surn surr surs suru sus- suse susk suss susu suus ucel uces ucrc ucsc ucsf ucsu uele uell uers uesn uess ufcu ufel ufer uffe ufuk ukcc ukek ukes ukeu uknc ukrc uksc ukur ulcc ulee ulek ulen ules ulfe ulle ullr ulne uluk ulul ulus uncc unce uncf uncl uncs unec unee unef unen uner unes unke unkl unkn unks unle unlf unne unns unrf unrs uns- unsc unus ure- ures urfe urff urke urle urls urne urns urre urse urss ursu uruk urun urur urus us-k uscc usce uscf uscs usee usef usel usen user uses usfc usfl usfs uske usle uslu usnc usnr usnu ussc usse ussf ussr usss ussu usul usun usus uuen uulu uuuu