-ic -ol c-- ccc cce cci cck ccl cco ccx ce- cec cee cei cek cel ceo cex ci- cic cie cii cik cil cio cix ckc cki cko ckx cl- clc cle cli clk cll clo clx co- coc coe coi cok col coo cox cxc cxi cxk cxl cxo cxx ec- ecc ece eci eck ecl eco ecx eec eee eek eel eeo eex eic eie eii eik eil eio eix ekc eke eki ekl eko elc ele eli elk ell elo elx eo- eoc eoe eoi eok eol eoo ex- exc exe exi exl exo exx icc ice ici ick icl ico ie- iec iee iei iek iel iex iic iie iii iil iio iix ikc ike iki ikk ikl iko ikx il- ilc ile ili ilk ill ilo ilx io- ioc ioe ioi iol ioo ixc ixe ixi ixl kcc kce kci kck kcl kcx ke- kec kee kei kek kel keo kex kic kie kii kik kil kio kix kkc kke kki kkk kkl kl- klc kli klo klx koc koe koi kok kol koo kxl kxo lcc lce lci lck lcl lco lcx lec lee lei lek lel leo lex lic lie lii lik lil lio lix lkl llc lle lli llk lll llo loc loe loi lok lol loo lox lxc lxi lxo lxx o-i oc- occ oci ock ocl oco ocx oec oee oei oel oeo oex oic oie oii oik oil oio okc oke oki okk okl oko olc ole oli olk oll olo oo- ooc ooi ook ool ooo oox ox- oxc oxi oxo oxx xci xcl xcx xee xel xex xic xie xii xio xix xke xkl xli xoc xoi xok xoo xox xxi xxl xxo xxx