nroc nron nrrc nrrl nycc nyco nycy nygh nyll nyny nyon nyrb nyro obbo obby obin oboi obol obon obor oboy obrh obri obro ocbc occc occi occn ochi ocin oclc ocon ocrl ocro ocrr ogb oggi oggy oghi ogin ogli ogni ognl ogog ogoi ogon ogri ogro ogry ogyl ohcc ohgr ohhi ohho ohio ohly ohno ohob ohoh ohrn ohyo oici oigo oiii oily oion oiry oiyl olbo olby olcc olgc olgr olib olic olig olin olio olli ollo olly olog olon olor olry onby onc- onco ongi ongo onic onil onir only onni onno onon onor onoy oobi ooby oocr ooho oolo oooh oooo oory orbb orbi orbo orby orch orci orco orgn orgo orgy ori- oric orig oril orin orio orlo orly ornc orni orno orny oro- oron oror oroy orri orro orry oych oyly oyon oyri rbbb rbbr rbcl rbgh rboh rcbc rcbo rccb rccc rcgc rchb rcic rcnl rcnr rcon rcrg rcyc rgbi rhbg rhcg rhib rhin rhio rhli rhob rhoc rhog rhoh rhon rhyl rib- ribo riby ricc rich rico rigg righ rigi rigo rigy riho riin rill rilo rily ring rinn rino riny riol rion riri riyo rlcg rlin rnbr rnco rnhl rnin rnli rob- robb robi robo roby rocc roch roco rogg rogh rogi rogo rogy rohl rohn rohr rohy roig roil roin roio roir roll rolo roly ronc rong roni rono rony roob roog rooi rool roon roor rorc rori roro rory royl royn rrrr rych ryhb ryng rynn ryob ryoh ryon ybnl ybor ybry yccc ycch ygon ygor yhon yigh yili yill ying yirb yirn yirr ylli ynch ynoh ynol ynon yobi yobo yoch yogh yogi yogo yohn yoho yoli yoll yolo yoly yong yoni yono yool yoon yori yorn yoro yory yoyn yoyo yrho yrin yrly yron yryn yyyy