msil msmb msmc msml msmm msms msol msor msrb mssf mssi mssm mssr obbo obis obls oboi obol obor obos obri obro obsr obss ocbc occc occi ocis oclc ocml ocms ocom ocos ocrl ocro ocrr ocrs ofcl ofcr off- offc offo offr offs ofml ofor oici oiii oils oimb oios oisc oism olbo olcc olfs olib olic olim olio olis olli ollo olmi olmo olms olof olom olor olos olsi ombo omic omim omio omis omo- omoi omoo omor omri omro omsi oobi oocr ooff oofs oolo ooms oooo ooos oosi orbb orbi orbo orbs orci orco orcs orff orfi orfs ori- oric orif oril orio oris orlo ormo oro- orof orom oror oros orri orro orrs orsi orso oscc osci oscl osco osii osim osis osli oslo osm- osmo osoi osoo osor osos osro ossb ossi osso rbbb rbbr rbbs rbcl rbis rbms rbsl rbss rcbc rcbo rccb rccc rccs rcfc rcic rcis rcls rcms rcos rcsc rcsi rcsl rcss rffc rffl rfic rib- ribo ribs ricc rico rics riff rifs riif riis rill rilo rimi rimm rimo rims riol riom rios riri rirs risc risi rism riso riss rlcs rlif rlls rlml rlms rmbs rmif rmll rmsc rob- robb robi robo robs rocc roco rocs rofc roff rofl rofo roif roil roio roir rois rolf roll rolm rolo romb romi romm romo roms roob roof rooi rool room roor roos rorc rori roro rosc rosi roso ross rrfc rrif rrmc rrrr rsbi rscc rscs rsfc rsis rslc rsml rsos rssl s-ib s-ic s-ii s-os sbbs sbcc sbcs sbfc sbic sbmc sbml sbor sbsi scbi sccc sccl sccm sccs scfc scfi scfm sci- scic scif scil scim scio scir scis scl- sclc sclm scls scmc scmm scmo scms scob scol scom scoo scor scr- scrc scri scrs scsc scsi scsl scso scsr sfbc sfcc sfco sfcs sffc sfio sflc sfls sfmm sfor sfos sfrc sfro sfss sibc sibi sibo sibs sicc sici sicm sico sics siff sifl sifo sifr siim sil- silc silf sili sill silo sils simi simm simo sims siol sior sios sirc sirf siri siro sirr sirs sisc sisi siss sl-i slcc slib slic slim slir sllm slmm slob sloc sloo slos slrc slrs slsc smbc smbf smcc smic smif smil smis smlc smls smoc smof smol smos smrf smsc smss sobo sobr sobs soci socl socm soco socr socs sofi sofo soic soif soil soim soir sois solf soli soll solo solr sols somb somi soml somm somo soof sool soom soor soos sorb sori sorm soro sorr sors sosi soso soss srbc srcc srfc srfi srib srim sris srmc sros ssbr sscc ssci sscs ssfc ssfl ssis sslc ssmc ssml ssoc ssrc ssri ssrl ssrm ssrs sssb sssc sssf sssi sssm ssss