rbbb rbbr rbbs rbcl rbis rble rbsl rbss rcbc rccb rccc rccs rcic rcis rcle rcls rcsc rcsi rcsl rcss rebb rebe rebk rebs recc rece reci reck recr recs reeb reek reel rees reii reik reil reir reis reke reki reks relb rele rell rels rere reri rers rese resi ress rib- ribe ribs ricc rice rick rics riek riel rier ries riis rike riki rikk rile rill rire riri rirs risc rise risi risk riss rkss rlcs rlee rlls rrle rrrr rsbi rscc rscs rsee rsis rslc rsre rssl s-ib s-ic s-ii sbbs sbcc sbcs sber sbic sbrk sbse sbsi scbi sccc scce sccl sccs scec scee scel scer sci- scic scie scil scir scis sck- sckl scl- sclc sclk scls scr- scrc scre scri scrs scsc scsi scsl scsr se-c se-e se-i se-k se-s sebe sebi sebs sec- secc sece seck secr secs seeb seec seek seel seer sees seie seii seik seil seir seis seke seki sekk selb sele seli selk sell sels serb serc sere seri serk serr sers sesc sese sesi sess sibc sibe sibi sibs sicc sice sici sick sics siec siek siel sier sies siik sike siki sikr siks sil- silc sile sili silk sill sils sirc sire siri sirk sirr sirs sisc sise sisi sisk siss skee skei skel sker skes skic skie skik skil skir skis skss sl-i slcc sleb slee sler sles slib slic slie slik slir slrc slre slrs slsc srbc srcc sreb srec sres srib sris ssbr sscc ssce ssci sscs ssec ssee sses ssis sslc ssle ssrc ssri ssrl ssrs sssb sssc sssi ssss