risi riso riss rixe rixo rlee rlef rlif rlin rlls rnie rnin rnli roel roen roer roes rofe roff rofl rofo roif roil roin roio roir rois role rolf roll rolo rone roni rono rons roof rooi rool roon roor roos roox rore rori roro rose rosi roso ross roxo rrif rrle rrrr rsee rsis rsnn rsno rsnr rsos rsre rssl rxes s-ii s-os se-e se-f se-i se-n se-o se-s se-x seef seel seen seer sees seex seff sefi sefl seie seif seii seil sein seir seis seix sele self seli sell selo sels sene seni senn seno senr sens seoi seol seon sere serf seri sern sero serr sers sese sesi seso sess sex- sexe sexi sfer sfio sfls sfne sfor sfos sfro sfss sief siel sien sier sies siex sife siff sifl sifo sifr sil- sile silf sili sill silo sils sine sini sinn sino sins sioe siol sion sior sios siox sire sirf siri siro sirr sirs sise sisi siss sixe sixo sixx sl-i slee sler sles slie slir slln sloe slon sloo slos slre slrn slrs snee snel sner snes snie snir snlf snns snoo snor snos snrs soel soen soeo soes sofi sofo soie soif soil soin soir sois sole solf soli soll soln solo solr sols son- sone soni sono sons soof sool soon soor soos sore sori sorn soro sorr sors sose sosi soso soss soxs sreo sres srfi sris srni srnn srno sros ssee sses ssex ssfl ssin ssis ssle ssns ssri ssrl ssrs sssf sssi ssss x-fi xeer xefe xen- xene xeni xenn xeno xeon xer- xero xers xexe xfer xfin xiii xil- xili xill xine xion xisi xixi xlii xlix xlox xnee xois xolo xorn xoro xors xosl xoxo xsel xsil xsin xson xxii xxix xxxi xxxo xxxx