OBSERVANDA

aa ab ad ae an ar as ba be bo de do ed en er es na ne no od oe on or os re so

aas aba abo abs ado ads ana and ane arb are ars ava ave avo baa bad ban bar bas bed ben bes boa bod bos bra bro dab dan deb den dev doe don dor dos ear eds end ens eon era ern ers nab nae neb nob nod nor nos oar oba obe oda ode ods oes one ons ora orb ore ors ose ova rad ran ras reb red res rev rob rod roe sab sad sae sea sen ser sob sod son van var vas voe

abas abed abos ados aeon aero anas ands anes anoa ansa arbs area ares arse arvo asea aver aves avos baas bade bads band bane bans bard bare barn bars base bead bean bear beds bend bens boar boas bode bods bond bone bora bore born brad brae bran bras bred bren bros dabs dans darb dare darn dean dear debs dens deva devs doer does dona done dons dore dors dose dove drab earn ears ebon ends eons eras erns eros nabe nabs nada naos nard nave near nebs nerd nobs node nods noes nose nova oars obas obes odas odea odes ones orad orbs ores osar oven over rads rand rase rave read rebs redo reds rend revs road roan robe robs rode rods roes rose rove sabe sade sand sane sard save sear send sera sned snob soar soba soda sone sora sorb sord sore sorn vane vans vara vars vasa vase vena vend vera verb voes