-ic bbb bbc bbd bbe bbi bbl bbt bcb bcc bcd bce bci bcl bct bdb bdc bdd bde bdi bdl bdt be- beb bec bed bee bei bel bet bi- bib bic bid bie bii bil bit blb blc bld ble bli bll blt btb btc btd bte bti btl btt c-- cbb cbc cbd cbe cbi cbl cbt ccb ccc ccd cce cci ccl cct cdb cdc cdd cde cdi cdl cdt ce- ceb cec ced cee cei cel cet ci- cib cic cid cie cii cil cit cl- clb clc cld cle cli cll clt ctb ctc ctd cte cti ctl ctt dbb dbc dbd dbe dbi dbl dbt dcb dcc dcd dce dci dcl dct ddb ddc ddd dde ddi ddl ddt de- deb dec ded dee dei del det di- dib dic did die dii dil dit dl- dlb dlc dld dle dli dll dlt dtb dtc dtd dte dti dtl dtt ebb ebc ebd ebe ebi ebl ebt ec- ecb ecc ecd ece eci ecl ect ed- edb edc edd ede edi edl edt eeb eec eed eee eel eet eib eic eid eie eii eil eit elb elc eld ele eli ell elt etb etc etd ete eti etl ett i-d ibb ibc ibd ibe ibi ibl ibt icb icc icd ice ici icl ict idb idc idd ide idi idl idt ie- iec ied iee iei iel iet iib iic iid iie iii iil iit il- ilb ilc ild ile ili ill ilt itb itc itd ite iti itl itt lbb lbc lbd lbe lbi lbl lbt lcb lcc lcd lce lci lcl lct ldb ldc ldd lde ldi ldl ldt leb lec led lee lei lel let lib lic lid lie lii lil lit llb llc lld lle lli lll llt ltb ltc ltd lte lti ltl ltt tbb tbc tbd tbe tbi tbl tbt tcb tcc tcd tce tci tcl tct tdb tdc tdd tde tdi tdl tdt te- teb tec ted tee tei tel tet tib tic tid tie tii til tit tlc tld tle tli tll tlt ttb ttc ttd tte tti ttl ttt