-ic bbb bbc bbe bbi bbl bbn bbt bcb bcc bce bci bcl bcn bct be- beb bec bee bei bel ben bet bi- bib bic bie bii bil bin bit blb blc ble bli bll bln blt bnb bnc bne bni bnl bnn bnt btb btc bte bti btl btn btt c-- cbb cbc cbe cbi cbl cbn cbt ccb ccc cce cci ccl ccn cct ce- ceb cec cee cei cel cen cet ci- cib cic cie cii cil cin cit cl- clb clc cle cli cll cln clt cn- cnb cnc cne cni cnl cnn cnt ctb ctc cte cti ctl ctn ctt ebb ebc ebe ebi ebl ebn ebt ec- ecb ecc ece eci ecl ecn ect eeb eec eee eel een eet eib eic eie eii eil ein eit elb elc ele eli ell eln elt en- enb enc ene eni enl enn ent etb etc ete eti etl etn ett ibb ibc ibe ibi ibl ibn ibt icb icc ice ici icl icn ict ie- iec iee iei iel ien iet iib iic iie iii iil iin iit il- ilb ilc ile ili ill iln ilt in- inb inc ine ini inl inn int itb itc ite iti itl itn itt lbb lbc lbe lbi lbl lbt lcb lcc lce lci lcl lcn lct leb lec lee lei lel len let lib lic lie lii lil lin lit llb llc lle lli lll lln llt lnb lnc lne lni lnl lnn lnt ltb ltc lte lti ltl ltt n-i nbb nbc nbe nbi nbl nbn nbt ncb ncc nce nci ncl ncn nct ne- neb nec nee nei nel nen net nib nic nie nii nil nin nit nlb nlc nle nli nll nln nlt nnb nnc nne nni nnl nnn nnt ntb ntc nte nti ntn ntt tbb tbc tbe tbi tbl tbn tbt tcb tcc tce tci tcl tcn tct te- teb tec tee tei tel ten tet tib tic tie tii til tin tit tlc tle tli tll tln tlt tnb tnc tne tni tnl tnn tnt ttb ttc tte tti ttl ttn ttt