-al -ol a-a a-c aaa aac aad aae aal aao aap ac- aca acc acd ace acl aco acp ad- ada adc add ade adl ado adp aea aec aed aee ael aeo aep al- ala alc ald ale all alo alp aoa aoc aod aoe aol aoo aop ap- apa apc apd ape apl apo app c-- caa cac cad cae cal cao cap cca ccc ccd cce ccl cco ccp cda cdc cdd cde cdl cdo cdp ce- cea cec ced cee cel ceo cep cl- cla clc cld cle cll clo clp co- coa coc cod coe col coo cop cpa cpc cpd cpe cpl cpo cpp daa dac dad dae dal dao dap dca dcc dcd dce dcl dco dcp dda ddc ddd dde ddl ddo ddp de- dea dec ded dee del deo dep dl- dla dlc dld dle dll dlo dlp doa doc dod doe dol doo dop dpa dpc dpd dpe dpl dpo dpp eaa eac ead eae eal eao eap ec- eca ecc ecd ece ecl eco ed- eda edc edd ede edl edo edp eea eec eed eee eel eeo eep ela elc eld ele ell elo elp eo- eoa eoc eod eoe eol eoo eop ep- epa epc epd epe epl epo epp l-p la- laa lac lad lae lal lao lap lca lcc lcd lce lcl lco lcp lda ldc ldd lde ldl ldo ldp lea lec led lee lel leo lep lla llc lld lle lll llo llp loa loc lod loe lol loo lop lpa lpc lpd lpe lpl lpo lpp oaa oac oad oae oal oao oap oc- oca occ ocd ocl oco ocp oda odc odd ode odl odo odp oea oec oed oee oel oeo oep ola olc old ole oll olo olp oo- ooa ooc ood ool ooo oop op- opa opc opd ope opl opo opp p-p paa pac pad pae pal pao pap pca pcc pcd pce pcl pco pcp pda pdc pdd pde pdl pdo pdp pea pec ped pee pel peo pep pla plc pld ple pll plo plp poa poc pod poe pol poo pop ppa ppc ppd ppe ppl ppo ppp