-ic bbb bbc bbe bbi bbl bbn bbs bcb bcc bce bci bcl bcn bcs be- beb bec bee bei bel ben bes bi- bib bic bie bii bil bin bis blb blc ble bli bll bln bls bnb bnc bne bni bnl bnn bns bsb bsc bse bsi bsl bsn bss c-- cbb cbc cbe cbi cbl cbn cbs ccb ccc cce cci ccl ccn ccs ce- ceb cec cee cei cel cen ces ci- cib cic cie cii cil cin cis cl- clb clc cle cli cll cln cls cn- cnb cnc cne cni cnl cnn cns csb csc cse csi csl csn css ebb ebc ebe ebi ebl ebn ebs ec- ecb ecc ece eci ecl ecn ecs eeb eec eee eel een ees eib eic eie eii eil ein eis elb elc ele eli ell eln els en- enb enc ene eni enl enn ens es- esb esc ese esi esl esn ess ibb ibc ibe ibi ibl ibn ibs icb icc ice ici icl icn ics ie- iec iee iei iel ien ies iib iic iie iii iil iin iis il- ilb ilc ile ili ill iln ils in- inb inc ine ini inl inn ins is- isb isc ise isi isl isn iss lbb lbc lbe lbi lbl lbs lcb lcc lce lci lcl lcn lcs leb lec lee lei lel len les lib lic lie lii lil lin lis llb llc lle lli lll lln lls lnb lnc lne lni lnl lnn lns lsb lsc lse lsi lsl lsn lss n-i nbb nbc nbe nbi nbl nbn nbs ncb ncc nce nci ncl ncn ncs ne- neb nec nee nei nel nen nes nib nic nie nii nil nin nis nlb nlc nle nli nll nln nls nnb nnc nne nni nnl nnn nns nsb nsc nse nsi nsl nsn nss sbb sbc sbe sbi sbl sbn sbs scb scc sce sci scl scn scs se- seb sec see sei sel sen ses sib sic sie sii sil sin sis slb slc sle sli sll sln sls snb snc sne sni snl snn sns ss- ssb ssc sse ssi ssl ssn sss