a-a aaa aad aae aan aap aas ad- ada add ade adn adp ads aea aed aee aen aep aes an- ana and ane ann anp ans ap- apa apd ape apn app aps as- asa asd ase asn asp ass daa dad dae dan dap das dda ddd dde ddn ddp dds de- dea ded dee den dep des dna dnd dne dnn dnp dns dpa dpd dpe dpn dpp dps dsa dsd dse dsn dsp dss eaa ead eae ean eap eas ed- eda edd ede edn edp eds eea eed eee een eep ees en- ena end ene enn enp ens ep- epa epd epe epn epp eps es- esa esd ese esn esp ess naa nad nae nan nap nas nda ndd nde ndn ndp nds ne- nea ned nee nen nep nes nna nne nnn nnp nns npa npd npe npn npp nps nsa nsd nse nsn nsp nss p-p paa pad pae pan pap pas pda pdd pde pdn pdp pds pea ped pee pen pep pes pn- pna pnd pne pnn pnp pns ppa ppd ppe ppn ppp pps ps- psa psd pse psn psp pss saa sad sae san sap sas sda sdd sde sdn sdp sds se- sea sed see sen sep ses sna snd sne snn snp sns spa spd spe spn spp sps ss- ssa ssd sse ssn ssp sss