-ic bbb bbc bbe bbi bbl bbm bbn bbt bcb bcc bce bci bcl bcm bcn bct be- beb bec bee bei bel bem ben bet bi- bib bic bie bii bil bim bin bit blb blc ble bli bll blm bln blt bmb bmc bme bmi bml bmm bmn bmt bnb bnc bne bni bnl bnn bnt btb btc bte bti btl btm btn btt c-- cbb cbc cbe cbi cbl cbm cbn cbt ccb ccc cce cci ccl ccm ccn cct ce- ceb cec cee cei cel cem cen cet ci- cib cic cie cii cil cim cin cit cl- clb clc cle cli cll clm cln clt cmb cmc cme cmi cml cmm cmn cmt cn- cnb cnc cne cni cnl cnm cnn cnt ctb ctc cte cti ctl ctm ctn ctt ebb ebc ebe ebi ebl ebm ebn ebt ec- ecb ecc ece eci ecl ecm ecn ect eeb eec eee eel eem een eet eib eic eie eii eil eim ein eit elb elc ele eli ell elm eln elt em- emb emc eme emi eml emm emn emt en- enb enc ene eni enl enm enn ent etb etc ete eti etl etm etn ett ibb ibc ibe ibi ibl ibm ibn ibt icb icc ice ici icl icm icn ict ie- iec iee iei iel iem ien iet iib iic iie iii iil iim iin iit il- ilb ilc ile ili ill ilm iln ilt im- imb imc ime imi iml imm imn imt in- inb inc ine ini inl inm inn int itb itc ite iti itl itm itn itt lbb lbc lbe lbi lbl lbm lbt lcb lcc lce lci lcl lcm lcn lct leb lec lee lei lel lem len let lib lic lie lii lil lim lin lit llb llc lle lli lll llm lln llt lmb lmc lme lmi lml lmm lmn lmt lnb lnc lne lni lnl lnm lnn lnt ltb ltc lte lti ltl ltm ltt mbb mbc mbe mbi mbl mbm mbt mc- mcb mcc mce mci mcl mcm mcn mct meb mec mee mei mel mem men met mi- mib mic mie mii mil mim min mit mlb mlc mle mli mll mlm mln mlt mmb mmc mme mmi mml mmm mmn mmt mnb mnc mne mni mnl mnm mnn mnt mtb mtc mte mti mtl mtm mtn mtt n-i nbb nbc nbe nbi nbl nbm nbn nbt ncb ncc nce nci ncl ncm ncn nct ne- neb nec nee nei nel nem nen net nib nic nie nii nil nim nin nit nlb nlc nle nli nll nlm nln nlt nmb nmc nme nmi nml nmm nmn nmt nnb nnc nne nni nnl nnm nnn nnt ntb ntc nte nti ntm ntn ntt tbb tbc tbe tbi tbl tbm tbn tbt tcb tcc tce tci tcl tcm tcn tct te- teb tec tee tei tel tem ten tet tib tic tie tii til tim tin tit tlc tle tli tll tlm tln tlt tmb tmc tme tmi tml tmm tmn tmt tnb tnc tne tni tnl tnm tnn tnt ttb ttc tte tti ttl ttm ttn ttt