-er a-a aaa aad aae aao aap aar aav ad- ada add ade ado adp adr adv aea aed aee aeo aep aer aev aoa aod aoe aoo aop aor aov ap- apa apd ape apo app apr apv ar- ara ard are aro arp arr arv av- ava avd ave avo avp avr daa dad dae dao dap dar dav dda ddd dde ddo ddp ddr de- dea ded dee deo dep der dev doa dod doe doo dop dor dov dpa dpd dpe dpo dpp dpr dpv dra drd dre dro drp drr drv dva dvd dve dvp dvr eaa ead eae eao eap ear eav ed- eda edd ede edo edp edr eea eed eee eeo eep eer eev eo- eoa eod eoe eoo eop eor ep- epa epd epe epo epp epr era erd ere ero erp err erv eva evd eve evo evp evr evv oaa oad oae oao oap oar oav oda odd ode odo odp odr odv oea oed oee oeo oep oer oo- ooa ood ooo oop oor oov op- opa opd ope opo opp opr opv or- ora ord ore oro orp orr orv ov- ova ovd ove ovo ovp ovv p-p paa pad pae pao pap par pav pda pdd pde pdo pdp pdr pdv pea ped pee peo pep per pev poa pod poe poo pop por pov ppa ppd ppe ppo ppp ppr ppv pra prd pre pro prp prr prv pva pvd pve pvo pvp pvr pvv ra- raa rad rae rao rap rar rav rda rdd rde rdo rdp rdr rdv re- rea red ree reo rep rer rev roa rod roe roo rop ror rov rpa rpd rpe rpo rpp rpr rpv rra rrd rrp rrr rva rvd rve rvo rvp rvr rvv v-a v-e vaa vad vae vao vap var vav vdd vde vdo vdp vdr vdv vea ved vee veo vep ver voa vod voe voo vop vor vov vpa vpd vpe vpo vpp vpr vra vrd vre vrp vrr vva vvo vvr vvv