-al -ol a-a a-c a-t aaa aac aae aal aao aap aat aax ac- aca acc ace acl aco acp act acx aea aec aee ael aeo aep aet aex al- ala alc ale all alo alp alt alx aoa aoc aoe aol aoo aop aot aox ap- apa apc ape apl apo app apt apx at- ata atc ate atl ato atp att atx ax- axa axe axl axo axp axt axx c-- caa cac cae cal cao cap cat cax cca ccc cce ccl cco ccp cct ccx ce- cea cec cee cel ceo cep cet cex cl- cla clc cle cll clo clp clt clx co- coa coc coe col coo cop cot cox cpa cpc cpe cpl cpo cpp cpt cpx cta ctc cte ctl cto ctp ctt ctx cxc cxl cxo cxp cxt cxx eaa eac eae eal eao eap eat eax ec- eca ecc ece ecl eco ect ecx eea eec eee eel eeo eep eet eex ela elc ele ell elo elp elt elx eo- eoa eoc eoe eol eoo eop eot ep- epa epc epe epl epo epp ept epx eta etc ete etl eto etp ett etx ex- exa exc exe exl exo exp ext exx l-p la- laa lac lae lal lao lap lat lax lca lcc lce lcl lco lcp lct lcx lea lec lee lel leo lep let lex lla llc lle lll llo llp llt loa loc loe lol loo lop lot lox lpa lpc lpe lpl lpo lpp lpt lpx lta ltc lte ltl lto ltp ltt ltx lxc lxo lxx oaa oac oae oal oao oap oat oax oc- oca occ ocl oco ocp oct ocx oea oec oee oel oeo oep oet oex ola olc ole oll olo olp olt oo- ooa ooc ool ooo oop oot oox op- opa opc ope opl opo opp opt opx ot- ota otc ote otl oto otp ott ox- oxa oxc oxo oxt oxx p-p paa pac pae pal pao pap pat pax pca pcc pce pcl pco pcp pct pcx pea pec pee pel peo pep pet pex pla plc ple pll plo plp plt plx poa poc poe pol poo pop pot pox ppa ppc ppe ppl ppo ppp ppt ppx pt- pta ptc pte ptl pto ptp ptt ptx pxc pxe pxl pxt t-x taa tac tae tal tao tap tat tax tca tcc tce tcl tco tcp tct tcx te- tea tec tee tel teo tep tet tex tla tlc tle tll tlo tlp tlt tlx to- toa toc toe tol too top tot tox tpa tpc tpe tpl tpo tpp tpt tpx tta ttc tte ttl tto ttp ttt ttx txe txl txt xaa xac xal xap xat xcl xcp xcx xee xel xep xet xex xla xlt xoa xoc xoo xop xot xox xpa xpc xpe xpl xpo xpp xpt xtc xtp xtx xxl xxo xxp xxx