-nik bbbb bbbs bbin bibb bibi bibs biin biis bin- bini bink binn bins birb biri birk birn birr birs bis- bisk biss bnib bnin bnrr bnss brik brin bris brkb brns brrr brrs brsb brsr bsin bsns ibis ibns ibri ibsn ibss iiii iiis iirs iisi iisr ikin ikki ikri inis inki inks inni innr inns inri inrs inss iri- irin iris irki irks irri irrs isbn isin isis isri issi issr isss kbbb kbbi kbbk kbbr kbbs kbib kbik kbis kbkb kbkk kbkr kbnn kbnr kbrb kbri kbrk kbrn kbsb kbsi kbsk kbsn kbsr kbss kibb kibi kibr kibs kiii kiik kiis kiki kikk kikr kin- kinb kini kink kinn kins kirb kiri kirk kirn kirr kirs kisi kisk kisn kisr kiss kkbb kkbi kkbn kkbr kkbs kkik kkin kkkk kknb kkni kknn kkns kkrb kkrk kkrn kkrr kkrs kksi kksn kksr kkss knbb knbn knbr knib knik knin knir knis knki knkk knnb knnk knnr knns knrb knrk knrs knsb knsi knsk knsn knsr knss krbb krbi krbk krbr krib krik krin kris krki krkk krkn krkr krks krnb krni krnk krnn krrb krri krrk krrn krrr krrs krsk krsn krsr krss ksbi ksbn ksbr ksbs ksib ksii ksik ksir ksis kskb kskk kskn kskr ksks ksnb ksnk ksnn ksnr ksns ksrb ksrn ksrr ksrs kssi kssn kssr ksss n-ii nibi nibs niir niki niks nini nins nirs nisi niss nnnn nnss nsin nsis nskk nsnr nssb nssr nsss rbbb rbbr rbbs rbis rbss rib- ribs riin riis riki rikk rink rinn riri rirs risi risk riss rkss rnbr rnin rrrr rsbi rsis rsnn rsnr s-ib s-ii sbbs sbrk sbsi sibi sibs siik siki sikr siks sini sink sinn sins siri sirk sirr sirs sisi sisk siss skik skin skir skis skn- skss snib snir snns snrk snrs srib sris srni srnn ssbn ssbr ssin ssis ssns ssri ssrs sssb sssi ssss