-ic b-u bbb bbc bbi bbk bbn bbr bbs bbt bbu bcb bcc bci bck bcn bcr bcs bct bcu bi- bib bic bii bik bin bir bis bit biu bkb bkc bkk bkn bkr bks bkt bnb bnc bni bnk bnn bnr bns bnt bnu brb bri brk brn brr brs brt bru bsb bsc bsi bsk bsn bsr bss bst bsu btb btc bti btk btn btr bts btt btu bub buc bui buk bun bur bus but buu c-- cbb cbc cbi cbk cbn cbr cbs cbt cbu ccb ccc cci cck ccn ccr ccs cct ccu ci- cib cic cii cik cin cir cis cit ciu ckb ckc cki cks ckt cn- cnb cnc cni cnn cnr cns cnt cnu crb crc cri crk crn crr crs crt cru csb csc csi csk csn csr css cst csu ctb ctc cti ctk ctn ctr cts ctt ctu cub cuc cui cuk cun cur cus cut cuu ibb ibc ibi ibk ibn ibr ibs ibt ibu icb icc ici ick icn icr ics ict icu iib iic iii iin iir iis iit iiu ikb ikc iki ikk ikr iks ikt iku in- inb inc ini ink inn inr ins int inu ir- irb irc iri irk irn irr irs irt iru is- isb isc isi isk isn isr iss ist isu itb itc iti itk itn its itt itu iu- iub iuc iui iur ius iut k-t kbb kbc kbi kbk kbn kbr kbs kbu kcb kcc kci kck kcn kcr kcs kct kcu kib kic kii kik kin kir kis kit kiu kkb kkc kki kkk kkn kkr kks kkt kku kn- knc kni knk knn knr knt knu krc kri krk krn krr krs krt kru ksb ksc ksi ksk ksn ksr kss kst ksu ktb ktc ktk ktn ktr kts ktt ktu kub kuc kui kuk kun kur kus kut kuu n-i nbb nbc nbi nbk nbn nbr nbs nbt nbu ncb ncc nci nck ncn ncr ncs nct ncu nib nic nii nik nin nir nis nit niu nkc nki nkk nkn nkr nks nkt nku nnb nnc nni nnk nnn nns nnt nnu nrb nrc nri nrk nrn nrr nrs nrt nru nsb nsc nsi nsk nsn nsr nss nst nsu ntb ntc nti ntk ntn ntr nts ntt ntu nub nuc nui nuk nun nur nus nut nuu rbb rbc rbi rbk rbn rbr rbs rbt rbu rcb rcc rci rcn rcr rcs rct rcu rib ric rii rik rin rir ris rit rkb rkc rkk rks rkt rku rnb rnc rni rnn rnr rns rnt rnu rrb rrc rri rrk rrn rrr rrs rrt rru rsb rsc rsi rsk rsn rsr rss rst rsu rtb rtc rti rtk rtn rtr rts rtt rtu rub ruc rui ruk run rur rus rut ruu sbb sbc sbi sbk sbn sbr sbs sbt sbu scb scc sci sck scn scr scs sct scu sib sic sii sik sin sir sis sit siu sk- skb skc ski skk skr sks skt sku snb snc sni snk snn snr sns snt snu sr- srb src sri srk srn srr srs srt ss- ssb ssc ssi ssk ssn ssr sss sst ssu stb stc sti stk stn str sts stt stu sub suc sui suk sun sur sus sut suu tbb tbc tbi tbk tbn tbr tbs tbt tbu tcb tcc tci tck tcn tcr tcs tct tcu tib tic tii tik tin tir tis tit tiu tkb tkc tkk tkr tks tkt tnb tnc tni tnk tnn tnr tns tnt trb trc tri trk trn trr trs trt tru tsb tsc tsi tsk tsn tsr tss tst tsu ttb ttc tti ttk ttn ttr tts ttt ttu tub tuc tui tuk tun tur tus tut tuu ubb ubc ubi ubk ubn ubr ubs ubt ubu ucb ucc uci uck ucn ucr ucs uct ucu uib uic uii uin uir uis uit uiu ukb ukc uki ukk ukn ukr uku un- unb unc uni unk unn unr uns unt unu ur- urb urc uri urk urn urr urs urt uru usb usc usi usk usn usr uss ust usu utb utc uti utk utn utr uts utt utu uuc uun uur uus uut uuu

-nik bbbb bbbs bbci bbin bbrc bcbc bcbs bccc bcci bccs bcis bcit bcnu bcrs bcru bcsc bcsn bcss bctc bcts bcuc bibb bibi bibs bicc bici bick bics biin biis biku bin- binc bini bink binn bins bint binu birb biri birk birn birr birs birt biru bis- bisc bisk biss bist bisu bitc bits bitt bitu bnib bnin bnrr bnss brcb bric brik brin bris brit brkb brns brrr brrs brsb brsr brst brtc bruc brun brus brut bsci bscs bsic bsin bskt bsns bssc bsts btcc btcs btrc btrt btss bttb btus bubb bubi bubs bubu bucc buci buck bucs bucu buic buik buin buir buis buit buiu buki bukk buku bunb buni bunk bunn buns bunt bunu bur- burb buri burk burn burr burs burt buru busc busi busk buss bust busu but- buti buts butt buus cbbc cbbs cbcc cbcn cbcr cbcs cbct cbcu cbir cbit cbkn cbkr cbrn cbrt cbsc cbsi cbsn cbtc cbus ccbc ccbn cccb cccc ccci cccs cccu ccic ccii ccir ccis ccnb ccnc ccni ccnr ccns ccnu ccrc ccri ccrs ccrt ccsi ccsn ccss ccst cctb cctc cctt ccuc ccus ccut cibc cibi cicc cici cicr cics cict cicu ciii ciis ciit cikr cin- cinc cini cink cint cirb circ ciri cirk cirr cirs cirt cis- cisc cisk cisn cisr ciss cist citb citi cits citt citu ciuc cius ckbc ckbi ckck ckcs ckin cknb cknc ckns cknt ckrc cksb ckst cktb ckts cnbc cnci cnib cnic cnki cnrc cnrr cnrt cnss cntc cntk cntr cnut crbc crbu crcc crcr crib cric crik crin cris crit criu crkc crns crrt crss crst crtc crts crub cruk crun crus crut cscb cscc csci cscr cscs csib csik csir csis csit csks csrc csrs