cccc ccci ccic ccii ccir ccix ccnc ccni ccnr ccoc ccrc ccri ccxi cicc cici cico cicr ciii cin- cinc cini cino cion cior circ ciri ciro cirr cixi cnci cnco cnic cnrc cnrr coco coin coir coix con- conc coni conn cono coon cor- corc cori corn coro corr crcc crcr cric crin croc cron croo cror cxii cxix cxro cxxi cxxx i-no iccc icci iccn icco iccr icnc icoc icon icor icrc icrr iiii iiio iino iioi iioo iirc inci inco incr inni inno innr ino- inoi inon inor inox inri inro ioci ioii ioio ioni ionn iono iooi iooo iori ircc ircx iri- iric irin irio irix iroc iron irrc irri ixxi n-ii nccc ncci nccn nccr ncix ncnc ncoc ncor ncrc ncri nicc nici nico niir nini nino nion nioo niro nixi nnnn noci noco noin noio noir noix non- noni nonn nono nonx noo- noon nooo noor nor- norc nori norn noro norr nric nroc nron nrrc occc occi occn ocin ocon ocro ocrr oici oiii oion onc- onco onic onir onix onni onno onon onor oocr oooo orci orco ori- oric orin orio orix ornc orni orno oro- oron oror orri orro oxi- oxic oxo- oxon oxox oxxo rccc rcic rcnr rcon ricc rico riin rinn rino rion riri rixc rixo rnco rnin rocc roco roin roio roir ronc roni rono rooi roon roor roox rorc rori roro roxo rrrr xcii xcon xcri xico xiii xion xixi xoco xorn xoro xoxo xxii xxix xxxi xxxo xxxx