-er a-a aaa aad aae aan aap aar ad- ada add ade adn adp adr aea aed aee aen aep aer an- ana and ane ann anp anr ap- apa apd ape apn app apr ar- ara ard are arn arp arr daa dad dae dan dap dar dda ddd dde ddn ddp ddr de- dea ded dee den dep der dna dnd dne dnn dnp dnr dpa dpd dpe dpn dpp dpr dra drd dre drn drp drr eaa ead eae ean eap ear ed- eda edd ede edn edp edr eea eed eee een eep eer en- ena end ene enn enp enr ep- epa epd epe epn epp epr era erd ere ern erp err naa nad nae nan nap nar nda ndd nde ndn ndp ndr ne- nea ned nee nen nep ner nna nne nnn nnp npa npd npe npn npp npr nra nrd nre nrn nrp nrr p-p paa pad pae pan pap par pda pdd pde pdn pdp pdr pea ped pee pen pep per pn- pna pnd pne pnn pnp pnr ppa ppd ppe ppn ppp ppr pra prd pre prn prp prr ra- raa rad rae ran rap rar rda rdd rde rdn rdp rdr re- rea red ree ren rep rer rna rnd rnn rnp rnr rpa rpd rpe rpn rpp rpr rra rrd rrn rrp rrr