mrbm mrca mrcb mrcc mrfc mria mrmc mrrc oafc oafo oaic oama oara obai obba obbo obia oboi obor obra obri obro ocab ocac ocam ocbc occa occc occi ocfa ocma ocom ocra ocro ocrr ofcr off- offa offc offo offr ofor ofra oiba oici oiii oimb oira omac omai omam omao omar ombo omca omia omic omim omio omma omo- omoa omoi omoo omor omra omri omro ooaa ooba oobi oocr ooff ooia ooma oooo oora orab orac orai oram orao orar orba orbb orbi orbo orca orci orco orff orfi ori- oria oric orif orio orma ormo oro- orof orom oror orra orri orro raab raaf raam raba rabb rabi rabo rac- raca racc raci raco rafa rafc raff rafi raia raic raif raii raim rair rama ramb rami ramm ramo raob raoc raom rara rarb rarf rari raro rbaf rbbb rbbr rcac rcaf rcbc rcbo rccb rccc rcfc rcic rfam rffc rfic riaa riab riai riam rib- riba ribo rica ricc rico rifa riff riia riif rima rimi rimm rimo riom riri rmaf rmif roab roaf roam roar rob- roba robb robi robo roca rocc roco rofc roff rofo roia roif roio roir roma romb romi romm romo roob roof rooi room roor rora rorc rori roro rrfc rrif rrmc rrrr