-al -ol a-a a-c aaa aac aad aak aal aao aap ac- aca acc acd ack acl aco acp ad- ada adc add adk adl ado adp aka akc akd akk akl ako akp al- ala alc ald alk all alo alp aoa aoc aod aok aol aoo aop ap- apa apc apd apk apl apo app c-- caa cac cad cak cal cao cap cca ccc ccd cck ccl cco ccp cda cdc cdd cdk cdl cdo cdp cka ckc ckd cko cl- cla clc cld clk cll clo clp co- coa coc cod cok col coo cop cpa cpc cpd cpk cpl cpo cpp daa dac dad dak dal dao dap dca dcc dcd dck dcl dco dcp dda ddc ddd ddk ddl ddo ddp dka dkc dkk dkl dko dkp dl- dla dlc dld dlk dll dlo dlp doa doc dod dok dol doo dop dpa dpc dpd dpk dpl dpo dpp ka- kaa kac kad kak kal kao kap kca kcc kcd kck kcl kcp kda kdc kdk kdl kdo kdp kkc kkk kkl kkp kl- kla klc kld klo koa koc kod kok kol koo kop kpa kpc kpd kpk kpl kpo kpp l-p la- laa lac lad lak lal lao lap lca lcc lcd lck lcl lco lcp lda ldc ldd ldk ldl ldo ldp lka lkl lkp lla llc lld llk lll llo llp loa loc lod lok lol loo lop lpa lpc lpd lpk lpl lpo lpp oaa oac oad oak oal oao oap oc- oca occ ocd ock ocl oco ocp oda odc odd odl odo odp oka okc okd okk okl oko okp ola olc old olk oll olo olp oo- ooa ooc ood ook ool ooo oop op- opa opc opd opk opl opo opp p-p paa pac pad pak pal pao pap pca pcc pcd pck pcl pco pcp pda pdc pdd pdk pdl pdo pdp pka pkc pkd pkl pko pkp pla plc pld plk pll plo plp poa poc pod pok pol poo pop ppa ppc ppd ppk ppl ppo ppp