mrdd mrfc mrkr mrmc mrmd mrml mrrc oadm oafc oafo oall oama oara obad obak obal obba obbo obkb obla obok obol obor obra obro ocab ocac ocad ocak ocal ocam ocbc occa occc ocfa oclc ocma ocml ocom ocra ocrl ocro ocrr odac odal odam odbo odda oddd odla odma odmr odom odoo odor odra odrl ofcl ofcr ofdr off- offa offc offo offr ofla ofml ofor ofra okak okam okka okko okla oklo okmo okok okol okom okor okra okro olac olaf olam olar olba olbo olca olcc oldb olfa olka olla ollo olmo olof olom olor omac omak omal omam omao omar ombo omca omda omdb omma omo- omoa omoo omor omra omro ooaa ooak ooba oocr ooda ooff oola oold oolo ooma oooo oora oord orab orac orad orak oral oram orao orar orba orbb orbo orca orco orda ordo orff orka orko orla orlo orma ormo oro- orof orok orom oror orra orro raab raad raaf raak raam raba rabb rabk rabl rabo rac- raca racc rack raco rada radc radd radl radm rado radr rafa rafc raff raka rakk rala ralb ralf rall ralo rama ramb raml ramm ramo raob raoc raok raol raom rara rarb rarf rark raro rbaf rbbb rbbr rbcl rbmk rcac rcaf rcbc rcbo rccb rccc rcdc rcfc rcrd rdac rdbm rdcm rdfa rdma rdoc rfam rffc rffl rkkf rlab rlml rmaf rmll roab road roaf roak roam roar rob- roba robb robo roca rocc rock roco roda rodd rodo rofc roff rofl rofo roka rokk roko rokr rola rold rolf rolk roll rolm rolo roma romb romd romk romm romo roob rood roof rook rool room roor rora rorc rork roro rrad rrfc rrkm rrmc rrrr