nert net- neta nete nett nfaa nfat nfct nfer nfff nfra nfta nftc nkfc nknt nkrf nktr nnnn nntn nrca nren nrfc nrna nrrc nrta ntcc nter ntfc ntrc nttr raaf raak raan raat rac- raca racc race rack ract raec raef raen raer rafa rafc rafe raff raft raka rake rakk rakt rana ranc rane rank rann rant rara rare rarf rark rata rate ratf ratk ratt rcac rcaf rccc rcet rcfc rcnr rctc rea- reac reae reaf reak rean rear reat reca recc rece reck recr rect reef reek reen reet refe reff refn refr reft reka reke rekt rena rene renk renn rent rera rere rert reta rete retr rett rfae rfef rffc rftc rkkf rnaf rnnt rrat rrfc rrna rrrr rtan rtca rtcc rtce rtee rtfc rtkn taa- taaf taan taar taat taca tacc tace tack tact taec taen taer tafa tafc tafe taff taft taka take takk takt tana tane tank tann tant tara tarc tare tarf tark tarn tarr tart tata tate tatr tatt tcca tccc tcfc tcnn tctc teac teak tean tear teat teca teck tecr tect teec teef teek teen teer teet tefc teff teft teka teke tena tenc tene tenk tenn tent ter- tera terc tere terf terk tern terr teta tete tetr tett tfae tfca tfec tftc tkac tnca tncc tnef tnfc traa trac trae traf trak tran trat trca trcc tre- trea trec tree tref trek tren tret trfc trfr trna trra trtc trte trtr ttcn tten tter ttfa ttfc ttff ttfn tttt