nsnr nsrc nssb nssc nsse nssr nsss nycc nyce nycy nyen nyer nyes nyne nyny nyrb nysc nyse nyss rbbb rbbr rbbs rbis rbss rcbc rccb rccc rccs rcgc rcic rcis rcnr rcrg rcsc rcsi rcss rcyc rebb rebe rebs recc rece reci recr recs recy reeb reen rees rege regi regn regr regs reii rein reir reis rene reng reni renn rens reny rere rerg reri rers rery rese resi resn ress rexx reye reyn reys rgbe rgbi rib- ribe ribs riby ricc rice rics rien rier ries riex rige rigg rigi rigs rigy riin riis rine ring rinn riny rire riri rirs risc rise risi riss rixc rixe rixy rnbr rncs rngs rnie rnin rrrr rsbi rscc rscn rscs rscy rsee rsgb rsgc rsis rsnn rsnr rsre rxes rybe ryeb ryen ryes ryge ryis ryne ryng rynn rysy s-ib s-ic s-ii sbbs sbcc sbcs sber sbic sbig sbse sbsi scbi sccc scce sccs sccy scec scee sceg scer scey scgs sci- scic scie scin scir scis scnr scr- scrc scre scri scrn scrs scry scsc scsi scsn scsr scye scyn se-c se-e se-g se-i se-n se-s se-x se-y sebe sebi sebs seby sec- secc sece secg secn secr secs secy seeb seec seeg seen seer sees seex seey sege segg segi segs seie seii sein seir seis seix sene seng seni senn senr sens seny serb serc sere serg seri sern serr sers sery sesc sese sesi sess sex- sexe sexi sexy seye seyn seys sgcb sgce sgcg sger sges sggg sggs sgic sgss sibc sibe sibi sibs siby sicc sice sici sics siec sieg sien sier sies siex sige sigg sigi sign sigs sigy sine sing sini sinn sins siny sirc sire siri sirr sirs sisc sise sisi siss sisy sixe sixx siyi sncc sneb snee sneg sner snes snib snie snig snir snns snrs snsy snye snys srbc srby srcc sreb srec sres srgb srib sris srni srnn ssbn ssbr ssby sscc ssce ssci sscs ssec ssee sses ssex ssgs ssin ssis ssns ssrc ssrg ssri ssrs sssb sssc sssi ssss syce sycr syen syer syes sygn syis syn- sync syne syng syns syny syre syrs syry syse syss syxe xbee xbin xces xcii xcis xcri xeer xen- xene xeni xenn xer- xers xexe xggi xibe xics xiii xine xing xisi xixi xnee xsgi xsin xxii xxix xxxi xxxx xxxy xyne xyr- ybbs yben yber ybry yccc ycee ycie ycsb yeen yeer yees yegg yegi yeie yeii yeir yenc yene yeng yeni yens yerb yere yeri yern yerr yers yery yesi yess yeye yeyi yeyr yien ying yins yirb yire yirn yirr yise yiss ynce ynes ynge ynne yren yrin yrne yryn ysby ysee ysen yser yses ysii ysse ysyb yyyy