-nik bbbb bbbs bbin bibb bibi bibs biin biis biku bin- bini bink binn bins binu birb biri birk birn birr birs biru bis- bisk biss bisu bnib bnin bnrr bnss brik brin bris brkb brns brrr brrs brsb brsr brun brus bsin bsns bubb bubi bubs bubu buik buin buir buis buiu buki bukk buku bunb buni bunk bunn buns bunu bur- burb buri burk burn burr burs buru busi busk buss busu buus ibis ibns ibri ibsn ibss ibus iiii iiis iirs iisi iisr iisu ikin ikki ikri iksu inis inki inks inni innr inns innu inri inrs inss insu inui inuk inun inus iri- irin iris irki irks irri irrs irun irus isbn isin isis isku isri issi issr isss issu isus iuiu iuss kbbb kbbi kbbk kbbr kbbs kbbu kbib kbik kbis kbiu kbkb kbkk kbkr kbnn kbnr kbnu kbrb kbri kbrk kbrn kbru kbsb kbsi kbsk kbsn kbsr kbss kbsu kbub kbuk kbun kbur kbus kbuu kibb kibi kibr kibs kibu kiii kiik kiis kiiu kiki kikk kikr kiku kin- kinb kini kink kinn kins kinu kirb kiri kirk kirn kirr kirs kiru kisi kisk kisn kisr kiss kisu kiun kiur kiuu kkbb kkbi kkbn kkbr kkbs kkik kkin kkkk kknb kkni kknn kkns kknu kkrb kkrk kkrn kkrr kkrs kksi kksn kksr kkss kksu kkus kkuu knbb knbn knbr knbu knib knik knin knir knis knki knkk knnb knnk knnr knns knrb knrk knrs knsb knsi knsk knsn knsr knss knsu knub knui knuk knur knus krbb krbi krbk krbr krib krik krin kris krki krkk krkn krkr krks krku krnb krni krnk krnn krnu krrb krri krrk krrn krrr krrs krsk krsn krsr krss krsu krui kruk krun krur ksbi ksbn ksbr ksbs ksib ksii ksik ksir ksis kskb kskk kskn kskr ksks ksku ksnb ksnk ksnn ksnr ksns ksrb ksrn ksrr ksrs kssi kssn kssr ksss kssu ksub ksui ksun ksuu kubb kubr kubs kubu kuik kuin kuki kukk kukn kuks kuku kuni kunk kunr kuns kunu kurb kuri kurk kurr kurs kuru kusb kusn kusu kuub kuuk kuur kuuu n-ii nibi nibs niir niiu niki niks niku nini nins nirs niru nisi niss nisu niur nnnn nnss nsin nsis nskk nsnr nssb nssr nsss nsub nubi nubk nubs nuik nuin nuki nuku nunk nunn nuns nuri nurn nurr nurs nuru nusi nuss nusu nuuk rbbb rbbr rbbs rbis rbss rib- ribs ribu riin riis riki rikk riku rink rinn riri rirs risi risk riss risu rius rkss rnbr rnin rrrr rrun rsbi rsis rsnn rsnr rubb rubi rubs rubu ruin ruis ruki rukk rukn ruku runi runk runn runs ruri rurs ruru rusi rusk russ rusu ruun s-ib s-ii sbbs sbrk sbsi sbus sibi sibs sibu siik siki sikr siks siku sini sink sinn sins sinu siri sirk sirr sirs siru sisi sisk siss sisu siui sius skik skin skir skis skiu skn- skss skui skun skur snib snir snns snrk snrs snub snur snus srib sris srni srnn srub ssbn ssbr ssin ssis ssns ssri ssrs sssb sssi ssss sub- subb subi subs suin suir suis suki suks suku sun- sunb suni sunk sunn suns sunu sur- suri surn surr surs suru sus- susi susk suss susu suus ubbi ubii ubik ubir ubis uirr ukur uni- unii unik unin unir unis unkn unks unni unns unrs uns- unus urbi urbs urib urik urin uris uriu urni urns urri ursi urss ursu uruk urun urur urus us-k usbr usbs usin usis usnr usnu ussb ussr usss ussu usui usun usus uuni uuri uusi uuuu