-nik bbbb bbbs bbin bibb bibi bibs biin biis bin- bini bink binn bins bint birb biri birk birn birr birs birt bis- bisk biss bist bits bitt bnib bnin bnrr bnss brik brin bris brit brkb brns brrr brrs brsb brsr brst bsin bskt bsns bsts btrt btss bttb ibis ibns ibri ibsn ibss ibtb ibts iiii iiis iiit iirs iisi iisr iist iitr iitt ikin ikki ikri inis init inki inks inni innr inns inri inrs inss inst inti intn intr ints iri- irin iris irki irks irri irrs irti irts isbn isbt isin isis isit isnt isri issi issr isss isti istr ists itbs itin itis itri itrs itsi kbbb kbbi kbbk kbbr kbbs kbbt kbib kbik kbis kbit kbkb kbkk kbkr kbnn kbnr kbrb kbri kbrk kbrn kbrt kbsb kbsi kbsk kbsn kbsr kbss kbst kbtb kbtk kbtn kbtr kbts kbtt kibb kibi kibr kibs kibt kiii kiik kiis kiit kiki kikk kikr kikt kin- kinb kini kink kinn kins kint kirb kiri kirk kirn kirr kirs kirt kisi kisk kisn kisr kiss kist kiti kitn kitr kits kitt kkbb kkbi kkbn kkbr kkbs kkbt kkik kkin kkit kkkk kknb kkni kknn kkns kknt kkrb kkrk kkrn kkrr kkrs kkrt kksi kksn kksr kkss kkst kktk kkts knbb knbn knbr knbt knib knik knin knir knis knit knki knkk knkt knnb knnk knnr knns knrb knrk knrs knsb knsi knsk knsn knsr knss knst knti kntk kntn kntr knts krbb krbi krbk krbr krbt krib krik krin kris krit krki krkk krkn krkr krks krnb krni krnk krnn krnt krrb krri krrk krrn krrr krrs krrt krsk krsn krsr krss krst krti krtk krtn krtr krts ksbi ksbn ksbr ksbs ksib ksii ksik ksir ksis ksit kskb kskk kskn kskr ksks ksnb ksnk ksnn ksnr ksns ksnt ksrb ksrn ksrr ksrs ksrt kssi kssn kssr ksss ksst kstb ksti kstk kstn kstr ksts kstt ktbb ktbn ktbr ktbt ktib ktik ktis ktkb ktkk ktkn ktkr ktks ktkt ktnk ktnn ktns ktnt ktrb ktri ktrk ktrn ktrr ktrs ktrt ktsn ktsr ktst ktti kttk kttn kttr ktts kttt n-ii nbti nibi nibs niir niit niki niks nini nins nirs nirt nisi niss nist nitb niti nitr nits nknt nktr nnit nnnn nnss nntn nrts nsin nsis nskk nsnr nssb nssr nsss nsts ntis ntsb ntss nttr rbbb rbbr rbbs rbis rbss rbst rib- ribs riin riis riki rikk rink rinn riri rirs risi risk riss rist riti rits ritt rkss rkts rnbr rnin rnnt rrrr rsbi rsis rsnn rsnr rsts rtkn rtns rtss rtts s-ib s-ii sbbs sbrk sbsi sbst sbtk sbtn sibi sibs siik siit siki sikr siks sini sink sinn sins sint siri sirk sirr sirs sirt sisi sisk siss sist sit- siti sitn sits sitt skik skin skir skis skit skn- skrt skss snib snir snit snns snrk snrs sntr srib sris srni srnn srtr ssbn ssbr ssin ssis ssit ssns ssri ssrs sssb sssi ssss sstb ssts stbs stib stik stir stis stit stks stnn stnr stns stri strk strn strs stsi stss sttr tbbs tbit tbrb tbst tibi tibs tiit tiki tini tink tinn tins tint tirb tiri tirr tirs tisb tisi tiss tist titi tits titt tkts tnik tnks tnts tri- trib trik trin tris trit trsi trst trtr tsin tsis tsks tssi tssr tsst tsts ttbb ttss tttt