-ic bbb bbc bbi bbk bbl bbn bbr bbs bcb bcc bci bck bcl bcn bcr bcs bi- bib bic bii bik bil bin bir bis bkb bkc bkk bkl bkn bkr bks blb blc bli blk bll bln blr bls bnb bnc bni bnk bnl bnn bnr bns brb bri brk brl brn brr brs bsb bsc bsi bsk bsl bsn bsr bss c-- cbb cbc cbi cbk cbl cbn cbr cbs ccb ccc cci cck ccl ccn ccr ccs ci- cib cic cii cik cil cin cir cis ckb ckc cki cks cl- clb clc cli clk cll cln clr cls cn- cnb cnc cni cnl cnn cnr cns crb crc cri crk crl crn crr crs csb csc csi csk csl csn csr css ibb ibc ibi ibk ibl ibn ibr ibs icb icc ici ick icl icn icr ics iib iic iii iil iin iir iis ikb ikc iki ikk ikl ikr iks il- ilb ilc ili ilk ill iln ilr ils in- inb inc ini ink inl inn inr ins ir- irb irc iri irk irl irn irr irs is- isb isc isi isk isl isn isr iss kbb kbc kbi kbk kbl kbn kbr kbs kcb kcc kci kck kcl kcn kcr kcs kib kic kii kik kil kin kir kis kkb kkc kki kkk kkl kkn kkr kks kl- klb klc kli klr kls kn- knc kni knk knl knn knr krc kri krk krl krn krr krs ksb ksc ksi ksk ksl ksn ksr kss lbb lbc lbi lbk lbl lbr lbs lcb lcc lci lck lcl lcn lcr lcs lib lic lii lik lil lin lir lis lkb lkl lkr lks llb llc lli llk lll lln llr lls lnb lnc lni lnk lnl lnn lnr lns lrb lrc lri lrk lrn lrr lrs lsb lsc lsi lsk lsl lsn lsr lss n-i nbb nbc nbi nbk nbl nbn nbr nbs ncb ncc nci nck ncl ncn ncr ncs nib nic nii nik nil nin nir nis nkc nki nkk nkn nkr nks nlb nlc nli nlk nll nln nlr nls nnb nnc nni nnk nnl nnn nns nrb nrc nri nrk nrl nrn nrr nrs nsb nsc nsi nsk nsl nsn nsr nss rbb rbc rbi rbk rbl rbn rbr rbs rcb rcc rci rcl rcn rcr rcs rib ric rii rik ril rin rir ris rkb rkc rkk rks rlc rli rll rln rlr rls rnb rnc rni rnn rnr rns rrb rrc rri rrk rrl rrn rrr rrs rsb rsc rsi rsk rsl rsn rsr rss sbb sbc sbi sbk sbl sbn sbr sbs scb scc sci sck scl scn scr scs sib sic sii sik sil sin sir sis sk- skb skc ski skk skl skr sks slb slc sli slk sll sln slr sls snb snc sni snk snl snn snr sns sr- srb src sri srk srl srn srr srs ss- ssb ssc ssi ssk ssl ssn ssr sss

-nik bbbb bbbs bbci bbin bblb bbls bbrc bcbc bcbs bccc bcci bccl bccs bcis bcrs bcsc bcsl bcsn bcss bibb bibi bibl bibs bicc bici bick bics biin biis bili bilk bill bils bin- binc bini bink binn bins birb biri birk birl birn birr birs bis- bisc bisk bisl biss blic blik blin blir blis blkb blls blni blrc blss bnib bnin bnrr bnss brcb bric brik bril brin bris brkb brls brns brrr brrs brsb brsr bsci bscs bsic bsin bslc bsns bssc cbbc cbbs cbcc cbcl cbcn cbcr cbcs cbir cbkl cbkn cbkr cblb cblc cbln cbrl cbrn cbsc cbsi cbsn ccbc ccbn cccb cccc ccci cccl cccs ccic ccii ccil ccir ccis cclc ccli ccls ccnb ccnc ccni ccnr ccns ccrc ccri ccrl ccrs ccsi ccsl ccsn ccss cibc cibi cicc cici cicr cics ciii ciis cikr cili cilk cill cils cin- cinc cini cink cirb circ ciri cirk cirl cirr cirs cis- cisc cisk cisl cisn cisr ciss ckbc ckbi ckck ckcl ckcs ckin ckln cknb cknc ckns ckrc cksb cksl clib clic clii clik clin clir clis clri clrs clsc cnbc cnbl cnci cnib cnic cnki cnrc cnrr cnsl cnss crbc crcc crcr crib cric crik crin cris crkc crkl crls crns crss cscb cscc csci cscl cscr cscs csib csik csir csis csks cslr csrc csrs cssr ibcs ibis ibns ibrc ibri ibsn ibss icbc icbs iccb iccc icci iccl iccn iccr iccs icis icks icll iclr icnb icnc icns icrc icrr icrs icsb icsc icsi icsr icss iiii iiis iirc iirs iisc iisi iisr ikin ikki ikri ilbc ilic ilin ilir ilis ilki ilks ill- illi ills ilni incb inci incl incr incs inis inki inks inni innr inns inri inrs insc inss ircc ircs iri- iric iril irin iris irki irks irlb irrc irri irrs isbl isbn iscc isci iscn iscr iscs isic isil isin isis isls isri issc issi issr isss k-ci kbbb kbbc kbbi kbbk kbbl kbbr kbbs kbcb kbci kbck kbcl kbcr kbcs kbib kbic kbik kbil kbis kbkb kbkk kbkl kbkr kblb kbll kblr kbls kbnl kbnn kbnr kbrb kbrc kbri kbrk kbrl kbrn kbsb kbsi kbsk kbsn kbsr kbss kcbc kcbi kcbk kcbl kcbr kcbs kccb kccc kcci kcck kccl kccr kcic kcii kcil kcin kcir kcis kckc kckk kckl kckn kckr kclc kcli kclk kcll kcln kclr kcls kcnb kcni kcnr kcns kcrc kcri kcrn kcrr kcrs kcsb kcsc kcsi kcsn kcsr kcss kibb kibc kibi kibl kibr kibs kicb kicc kick kicl kicr kics kiic kiii kiik kiis kikc kiki kikk kikr kilb kili kilk kill kiln kilr kin- kinb kinc kini kink kinl kinn kins kirb kirc kiri kirk kirn kirr kirs kisc kisi kisk kisl kisn kisr kiss kkbb kkbi kkbl kkbn kkbr kkbs kkcb kkci kkck kkcl kkcn kkcr kkcs kkic kkik kkin kkkk kklb kklc kkli kkll kkln kkls kknb kkni kknn kkns kkrb kkrc kkrk kkrl kkrn kkrr kkrs kksi kksn kksr kkss klbb klbc klbl klbn klbs klcb klcc klci klck klcl klcn