bbbb bbbs bbdd bblb bbls bd-r bdls bdsd bldr blls blss bnrr bnss brds brls brns brrr brrs brsb brsr bsbd bsdl bsnd bsns bsrd bssd dbls dbnl dbrn dbrs dbss dddd ddss dlbd dlrs drrs dsdr dsls dsrr dssn lbds lblr lbrs ldls ldrs llbs lldb llds llll lndn lrdd lrds lrrr ls-r lsds lssr nddb ndls ndsl ndss nlls nlrb nndb nnls nnnn nnsl nnss nrds nrlb nrrd nrrl nsdl nsds nslr nsls nsnr nsrd nsrl nssb nssr nsss rbbb rbbr rbbs rbds rbsd rbsl rbss rlds rlls rnbr rnds rnld rrrr rsdd rsdl rsds rsnn rsnr rssl sbbs sbds sbsd sdds sdls sdrs sdsl sdss slds slln slrn slrs snns snrs snsd srnn srsd ssbn ssbr ssdd ssns ssrl ssrs sssb ssss