ndaa ndak ndas ndcc ndcs nddb ndna ndrc ndss nndb nnnn nnsa nnss nrab nras nrca nrcs nrdc nrds nrna nrrc nrrd nrsa nrsc nsaa nsac nsar nsca nscc nscd nscs nsds nskk nsna nsnr nsra nsrc nsrd nssa nssb nssc nssr nsss raab raad raak raan raas raba rabb rabk rabs rac- raca racc rack racs rada radc radd radr rads raka rakk rana ranc rand rank rann rans rara rarb rark rars rasa rasc rasd rask rass rbbb rbbr rbbs rbds rbsd rbss rcac rcas rcbc rccb rccc rccs rcdc rcds rcnr rcrd rcsa rcsc rcsd rcss rdac rdas rdna rkss rnas rnbr rncs rndc rnds rrad rras rrna rrrr rsaa rscc rscn rscs rsdd rsds rsna rsnn rsnr rssa sa-c saab saac saad saak saan saar saas saba sabb sabc sabr sabs saca sacc sacd sack sacn sacr sacs sada sadb sadc sadd sadr sads saka sakb sakk saks sana sand sank sann sanr sans sara sarc sard sark sarn sarr sars sasa sasc sasd sask sass sbaa sbac sbar sbas sbbs sbca sbcc sbcs sbds sbrk sbsa sbsd scaa scab scac scad scak scan scar scas scba sccc sccs scda scdc scds sck- scna scnd scnr scr- scra scrc scrn scrs scsa scsc scsd scsn scsr sdak sdba sdcc sddc sdds sdna sdrc sdrs sdsc sdss skab skac skad skan skar skn- skra sksd skss snab snad snak snar snas snba snca sncc snda snns snra snrk snrs snsd sras srbc srcc srna srnn srsd ssaa ssab ssac ssan ssas ssbn ssbr ssca sscc sscs ssdc ssdd ssns ssra ssrc ssrs sssa sssb sssc ssss