-ic b-u bbb bbc bbi bbk bbn bbr bbs bbu bcb bcc bci bck bcn bcr bcs bcu bi- bib bic bii bik bin bir bis biu bkb bkc bkk bkn bkr bks bnb bnc bni bnk bnn bnr bns bnu brb bri brk brn brr brs bru bsb bsc bsi bsk bsn bsr bss bsu bub buc bui buk bun bur bus buu c-- cbb cbc cbi cbk cbn cbr cbs cbu ccb ccc cci cck ccn ccr ccs ccu ci- cib cic cii cik cin cir cis ciu ckb ckc cki cks cn- cnb cnc cni cnn cnr cns cnu crb crc cri crk crn crr crs cru csb csc csi csk csn csr css csu cub cuc cui cuk cun cur cus cuu ibb ibc ibi ibk ibn ibr ibs ibu icb icc ici ick icn icr ics icu iib iic iii iin iir iis iiu ikb ikc iki ikk ikr iks iku in- inb inc ini ink inn inr ins inu ir- irb irc iri irk irn irr irs iru is- isb isc isi isk isn isr iss isu iu- iub iuc iui iur ius kbb kbc kbi kbk kbn kbr kbs kbu kcb kcc kci kck kcn kcr kcs kcu kib kic kii kik kin kir kis kiu kkb kkc kki kkk kkn kkr kks kku kn- knc kni knk knn knr knu krc kri krk krn krr krs kru ksb ksc ksi ksk ksn ksr kss ksu kub kuc kui kuk kun kur kus kuu n-i nbb nbc nbi nbk nbn nbr nbs nbu ncb ncc nci nck ncn ncr ncs ncu nib nic nii nik nin nir nis niu nkc nki nkk nkn nkr nks nku nnb nnc nni nnk nnn nns nnu nrb nrc nri nrk nrn nrr nrs nru nsb nsc nsi nsk nsn nsr nss nsu nub nuc nui nuk nun nur nus nuu rbb rbc rbi rbk rbn rbr rbs rbu rcb rcc rci rcn rcr rcs rcu rib ric rii rik rin rir ris rkb rkc rkk rks rku rnb rnc rni rnn rnr rns rnu rrb rrc rri rrk rrn rrr rrs rru rsb rsc rsi rsk rsn rsr rss rsu rub ruc rui ruk run rur rus ruu sbb sbc sbi sbk sbn sbr sbs sbu scb scc sci sck scn scr scs scu sib sic sii sik sin sir sis siu sk- skb skc ski skk skr sks sku snb snc sni snk snn snr sns snu sr- srb src sri srk srn srr srs ss- ssb ssc ssi ssk ssn ssr sss ssu sub suc sui suk sun sur sus suu ubb ubc ubi ubk ubn ubr ubs ubu ucb ucc uci uck ucn ucr ucs ucu uib uic uii uin uir uis uiu ukb ukc uki ukk ukn ukr uku un- unb unc uni unk unn unr uns unu ur- urb urc uri urk urn urr urs uru usb usc usi usk usn usr uss usu uuc uun uur uus uuu

-nik bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcnu bcrs bcru bcsc bcsn bcss bcuc bibb bibi bibs bicc bici bick bics biin biis biku bin- binc bini bink binn bins binu birb biri birk birn birr birs biru bis- bisc bisk biss bisu bnib bnin bnrr bnss brcb bric brik brin bris brkb brns brrr brrs brsb brsr bruc brun brus bsci bscs bsic bsin bsns bssc bubb bubi bubs bubu bucc buci buck bucs bucu buic buik buin buir buis buiu buki bukk buku bunb buni bunk bunn buns bunu bur- burb buri burk burn burr burs buru busc busi busk buss busu buus cbbc cbbs cbcc cbcn cbcr cbcs cbcu cbir cbkn cbkr cbrn cbsc cbsi cbsn cbus ccbc ccbn cccb cccc ccci cccs cccu ccic ccii ccir ccis ccnb ccnc ccni ccnr ccns ccnu ccrc ccri ccrs ccsi ccsn ccss ccuc ccus cibc cibi cicc cici cicr cics cicu ciii ciis cikr cin- cinc cini cink cirb circ ciri cirk cirr cirs cis- cisc cisk cisn cisr ciss ciuc cius ckbc ckbi ckck ckcs ckin cknb cknc ckns ckrc cksb cnbc cnci cnib cnic cnki cnrc cnrr cnss crbc crbu crcc crcr crib cric crik crin cris criu crkc crns crss crub cruk crun crus cscb cscc csci cscr cscs csib csik csir csis csks csrc csrs cssr csur csus cub- cubb cubi cubs cucc cuci cuck cucn cui- cuin cuir cuis cuk- curb curi curn curr curs cusb cusk cuss cusu ibcs ibis ibns ibrc ibri ibsn ibss ibus icbc icbs iccb iccc icci iccn iccr iccs iccu icis icks icnb icnc icns icrc icrr icrs icru icsb icsc icsi icsr icss icub icus iiii iiis iirc iirs iisc iisi iisr iisu iiuc ikin ikki ikri iksu incb inci incr incs inis inki inks inni innr inns innu inri inrs insc inss insu inui inuk inun inus ircc ircs ircu iri- iric irin iris irki irks irrc irri irrs irun irus isbn iscc isci iscn iscr iscs iscu isic isin isis isku isri issc issi issr isss issu isus iucc iuiu iuss k-ci kbbb kbbc kbbi kbbk kbbr kbbs kbbu kbcb kbci kbck kbcr kbcs kbcu kbib kbic kbik kbis kbiu kbkb kbkk kbkr kbnn kbnr kbnu kbrb kbrc kbri kbrk kbrn kbru kbsb kbsi kbsk kbsn kbsr kbss kbsu kbub kbuc kbuk kbun kbur kbus kbuu kcbc kcbi kcbk kcbr kcbs kcbu kccb kccc kcci kcck kccr kccu kcic kcii kcin kcir kcis kciu kckc kckk kckn kckr kcnb kcni kcnr kcns kcrc kcri kcrn kcrr kcrs kcru kcsb kcsc kcsi kcsn kcsr kcss kcsu kcub kcui kcuk kibb kibc kibi kibr kibs kibu kicb kicc kick kicr kics kiic kiii kiik kiis kiiu kikc kiki kikk kikr kiku kin- kinb kinc kini kink kinn kins kinu kirb kirc kiri kirk kirn kirr kirs kiru kisc kisi kisk kisn kisr kiss kisu kiun kiur kiuu kkbb kkbi kkbn kkbr kkbs kkcb kkci kkck kkcn kkcr kkcs kkic kkik kkin kkkk kknb kkni