-ic bbb bbc bbe bbi bbl bcb bcc bce bci bcl be- beb bec bee bei bel bi- bib bic bie bii bil blb blc ble bli bll c-- cbb cbc cbe cbi cbl ccb ccc cce cci ccl ce- ceb cec cee cei cel ci- cib cic cie cii cil cl- clb clc cle cli cll ebb ebc ebe ebi ebl ec- ecb ecc ece eci ecl eeb eec eee eel eib eic eie eii eil elb elc ele eli ell ibb ibc ibe ibi ibl icb icc ice ici icl ie- iec iee iei iel iib iic iie iii iil il- ilb ilc ile ili ill lbb lbc lbe lbi lbl lcb lcc lce lci lcl leb lec lee lei lel lib lic lie lii lil llb llc lle lli lll