-ic bbb bbc bbe bbf bbh bbi bbk bbs bcb bcc bce bcf bch bci bck bcs be- beb bec bee bef beh bei bek bes bfb bfc bfe bff bfh bfi bfs bhb bhc bhe bhf bhh bhi bhk bhs bi- bib bic bie bif bih bii bik bis bkb bkc bke bkf bkk bks bsb bsc bse bsf bsh bsi bsk bss c-- cbb cbc cbe cbf cbh cbi cbk cbs ccb ccc cce ccf cch cci cck ccs ce- ceb cec cee cef ceh cei cek ces cfb cfc cfe cff cfh cfi cfk cfs ch- chb chc che chf chh chi chk chs ci- cib cic cie cif cih cii cik cis ckb ckc ckh cki cks csb csc cse csf csh csi csk css ebb ebc ebe ebf ebh ebi ebk ebs ec- ecb ecc ece ecf ech eci eck ecs eeb eec eee eef eek ees ef- efb efc efe eff efh efi efs ehb ehc ehe ehf ehh ehi ehs eib eic eie eif eii eik eis ekb ekc eke ekf ekh eki eks es- esb esc ese esf esh esi esk ess fbb fbc fbe fbf fbh fbi fbk fbs fcb fcc fce fcf fci fck fcs feb fec fee fef feh fei fek fes ffc ffe fff ffh ffi ffk ffs fhb fhc fhe fhf fhh fhi fhs fib fic fie fif fih fii fik fis fkb fkc fkf fki fkk fsb fsc fse fsf fsh fsi fsk fss h-i hbb hbc hbe hbf hbh hbi hbk hbs hcb hcc hce hcf hch hci hck hcs he- heb hec hee hef heh hei hek hes hfb hfc hfe hff hfh hfi hfk hfs hhb hhc hhe hhf hhh hhi hhk hhs hib hic hie hif hih hii hik his hkb hkf hkh hki hkk hks hsb hsc hse hsf hsh hsi hsk hss i-f ibb ibc ibe ibf ibh ibi ibk ibs icb icc ice icf ich ici ick ics ie- iec iee ief iei iek ies ifb ifc ife iff ifi ifs ihb ihc ihe ihf ihh ihi ihk ihs iib iic iie iif iih iii iis ikb ikc ike ikf iki ikk iks is- isb isc ise isf ish isi isk iss kbb kbc kbe kbf kbh kbi kbk kbs kcb kcc kce kch kci kck kcs ke- keb kec kee kef keh kei kek kes kfc kff kfh kfi kfs khe khf khh khi khk khs kib kic kie kif kih kii kik kis kkb kkc kke kkh kki kkk kks ksb ksc kse ksf ksh ksi ksk kss sbb sbc sbe sbf sbh sbi sbk sbs scb scc sce scf sch sci sck scs se- seb sec see sef seh sei sek ses sfb sfc sfe sff sfh sfi sfk sfs sh- shb shc she shf shh shi shk shs sib sic sie sif sih sii sik sis sk- skb skc ske skf skh ski skk sks ss- ssb ssc sse ssf ssh ssi ssk sss