-ic bbb bbc bbe bbf bbi bbk bbn bbs bbt bcb bcc bce bcf bci bck bcn bcs bct be- beb bec bee bef bei bek ben bes bet bfb bfc bfe bff bfi bfn bfs bft bi- bib bic bie bif bii bik bin bis bit bkb bkc bke bkf bkk bkn bks bkt bnb bnc bne bnf bni bnk bnn bns bnt bsb bsc bse bsf bsi bsk bsn bss bst btb btc bte btf bti btk btn bts btt c-- cbb cbc cbe cbf cbi cbk cbn cbs cbt ccb ccc cce ccf cci cck ccn ccs cct ce- ceb cec cee cef cei cek cen ces cet cfb cfc cfe cff cfi cfk cfn cfs cft ci- cib cic cie cif cii cik cin cis cit ckb ckc cki cks ckt cn- cnb cnc cne cnf cni cnn cns cnt csb csc cse csf csi csk csn css cst ctb ctc cte ctf cti ctk ctn cts ctt ebb ebc ebe ebf ebi ebk ebn ebs ebt ec- ecb ecc ece ecf eci eck ecn ecs ect eeb eec eee eef eek een ees eet ef- efb efc efe eff efi efs eft eib eic eie eif eii eik ein eis eit ekb ekc eke ekf eki eks ekt en- enb enc ene enf eni enk enn ens ent es- esb esc ese esf esi esk esn ess est etb etc ete etf eti etk etn ets ett fbb fbc fbe fbf fbi fbk fbn fbs fbt fcb fcc fce fcf fci fck fcn fcs fct feb fec fee fef fei fek fen fes fet ffc ffe fff ffi ffk ffn ffs fft fib fic fie fif fii fik fin fis fit fkb fkc fkf fki fkk fkt fnb fnc fne fnf fni fnk fnn fns fnt fsb fsc fse fsf fsi fsk fsn fss fst ftb ftc fte ftf fti ftk ftn fts ftt i-f ibb ibc ibe ibf ibi ibk ibn ibs ibt icb icc ice icf ici ick icn ics ict ie- iec iee ief iei iek ien ies iet ifb ifc ife iff ifi ifn ifs ift iib iic iie iif iii iin iis iit ikb ikc ike ikf iki ikk iks ikt in- inb inc ine inf ini ink inn ins int is- isb isc ise isf isi isk isn iss ist itb itc ite itf iti itk itn its itt k-t kbb kbc kbe kbf kbi kbk kbn kbs kcb kcc kce kci kck kcn kcs kct ke- keb kec kee kef kei kek ken kes ket kfc kff kfi kfs kib kic kie kif kii kik kin kis kit kkb kkc kke kki kkk kkn kks kkt kn- knc kne knf kni knk knn knt ksb ksc kse ksf ksi ksk ksn kss kst ktb ktc kte ktf ktk ktn kts ktt n-i nbb nbc nbe nbf nbi nbk nbn nbs nbt ncb ncc nce ncf nci nck ncn ncs nct ne- neb nec nee nef nei nek nen nes net nfb nfc nfe nff nfi nfk nfn nfs nft nib nic nie nif nii nik nin nis nit nkc nke nkf nki nkk nkn nks nkt nnb nnc nne nnf nni nnk nnn nns nnt nsb nsc nse nsf nsi nsk nsn nss nst ntb ntc nte ntf nti ntk ntn nts ntt sbb sbc sbe sbf sbi sbk sbn sbs sbt scb scc sce scf sci sck scn scs sct se- seb sec see sef sei sek sen ses set sfb sfc sfe sff sfi sfk sfn sfs sft sib sic sie sif sii sik sin sis sit sk- skb skc ske skf ski skk sks skt snb snc sne snf sni snk snn sns snt ss- ssb ssc sse ssf ssi ssk ssn sss sst stb stc ste stf sti stk stn sts stt tbb tbc tbe tbf tbi tbk tbn tbs tbt tcb tcc tce tcf tci tck tcn tcs tct te- teb tec tee tef tei tek ten tes tet tfb tfc tfe tff tfi tfk tfn tfs tft tib tic tie tif tii tik tin tis tit tkb tkc tke tkk tks tkt tnb tnc tne tnf tni tnk tnn tns tnt tsb tsc tse tsf tsi tsk tsn tss tst ttb ttc tte ttf tti ttk ttn tts ttt