-ey c-- ccc cce cco ccp cct ccx ce- cec cee ceo cep cet cex cey co- coc coe coo cop cot cox coy cpc cpe cpo cpp cpt cpx ctc cte cto ctp ctt ctx cty cxc cxo cxp cxt cxx cyc cye cyo cyp cyt ec- ecc ece eco ect ecx eec eee eeo eep eet eex eey eo- eoc eoe eoo eop eot ep- epc epe epo epp ept epx etc ete eto etp ett etx ety ex- exc exe exo exp ext exx exy eyc eye eyo eyp eyt oc- occ oco ocp oct ocx oec oee oeo oep oet oex oey oo- ooc ooo oop oot oox op- opc ope opo opp opt opx opy ot- otc ote oto otp ott ox- oxc oxo oxt oxx oxy oye oyo p-p pcc pce pco pcp pct pcx pec pee peo pep pet pex pey poc poe poo pop pot pox poy ppc ppe ppo ppp ppt ppx pt- ptc pte pto ptp ptt ptx pty pxc pxe pxt py- pyc pye pyo pyt pyx t-x tcc tce tco tcp tct tcx te- tec tee teo tep tet tex tey to- toc toe too top tot tox toy tpc tpe tpo tpp tpt tpx ttc tte tto ttp ttt ttx tty txe txt tyc tye tyo typ tyt xcp xcx xee xep xet xex xoc xoo xop xot xox xpc xpe xpo xpp xpt xtc xtp xtx xty xxo xxp xxx xxy xyp xyy ycc yce yco ycp ycy yec yee yeo yep yet yex yey yoc yoe yoo yop yot yox yoy ypo ytc yte yto ytp ytt yxe yxy yyc yye yyt yyy