-ic -ol bbb bbc bbe bbi bbk bbl bbo bcb bcc bce bci bck bcl bco be- beb bec bee bei bek bel beo bi- bib bic bie bii bik bil bio bkb bkc bke bkk bkl bko blb blc ble bli blk bll blo bob boc boe boi bok bol boo c-- cbb cbc cbe cbi cbk cbl cbo ccb ccc cce cci cck ccl cco ce- ceb cec cee cei cek cel ceo ci- cib cic cie cii cik cil cio ckb ckc cki cko cl- clb clc cle cli clk cll clo co- cob coc coe coi cok col coo ebb ebc ebe ebi ebk ebl ebo ec- ecb ecc ece eci eck ecl eco eeb eec eee eek eel eeo eib eic eie eii eik eil eio ekb ekc eke eki ekl eko elb elc ele eli elk ell elo eo- eob eoc eoe eoi eok eol eoo ibb ibc ibe ibi ibk ibl ibo icb icc ice ici ick icl ico ie- iec iee iei iek iel iib iic iie iii iil iio ikb ikc ike iki ikk ikl iko il- ilb ilc ile ili ilk ill ilo io- iob ioc ioe ioi iol ioo kbb kbc kbe kbi kbk kbl kbo kcb kcc kce kci kck kcl ke- keb kec kee kei kek kel keo kib kic kie kii kik kil kio kkb kkc kke kki kkk kkl kl- klb klc kli klo kob koc koe koi kok kol koo lbb lbc lbe lbi lbk lbl lbo lcb lcc lce lci lck lcl lco leb lec lee lei lek lel leo lib lic lie lii lik lil lio lkb lkl llb llc lle lli llk lll llo lob loc loe loi lok lol loo o-i ob- obb obc obe obi obk obl obo oc- ocb occ oci ock ocl oco oeb oec oee oei oel oeo oib oic oie oii oik oil oio okb okc oke oki okk okl oko olb olc ole oli olk oll olo oo- oob ooc ooi ook ool ooo